The Science Explained
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A Tool To Train Your Mind
The stars we see, the ground beneath us, even the flow of time may be a 'VR headset'-like user interface of a deeper reality, a model of existence where perception continually renders both the quantum and spacetime - a generative mechanism of consciousness that assembles and edits the very stage on which it seems to perform .. where what we see is a species-specific data structure, computed and created by our consciousness for survival, not for accuracy or to see the entirety of reality ('the truth').
All this is centered around the wave function equation .. it's collapse (CAUSED BY YOUR ATTENTION) is the exact gateway that results in what appears in your everyday life, including infinitesimal quantum space all the way to the observed infinite expanse of cosmic space, because they are 'one'. Furthermore it is the expression of 'conscious agents' (you) interacting > causing wave function collpase > causing 'emergence' (ref: Objects of Consciousness), versus physicist's former view that the universe is 'always there'. Essentially 'emergence' means the material universe is not the fundamental base of reality, and in Donald Hoffman's view the universe is rendered or assembled .. that is .. EMERGES .. both 'on the fly' .. and only as we need it.
Also, scientists not only posit that space, time and matter are not fundamental (or 'spacetime is doomed') but that our 'universe' is literally manifest only in our mind. They state that only consciousness is the fundamental principle and consciousness is all that fundamentally exists. A 'universe' they posit is a fininte, temporary and relatively tiny data structure .. a data structure that exists merely as an experience of consciousness (similar to the experience of a VR headset). One end of this data structure is the Planck scale in the infinitesimal limits of quantum reality, the other end is an infinite expanse of cosmic space .. and when the data structure reaches the end of it's lifecycle the result is complete quantum decay (evaporation) and complete cosmic thermaldynamic inactivity (ref: How Could The Big Bang Arise Out Of Nothing).
Consciousness doesn't originate from the 'universe', instead, the universe emerges from consciousness and is a grand mental experience.
Recent rigorous scientific work includes mathematically describing how quantum wave-particles manifest ('emerge'), which is thought to be the interaction of the fundamental components of existence: consciousness in the form of ‘conscious agents', YOU AND I THAT IS. Furthermore this interaction of conscious agents is perfectly described by the quantum wave function equation (ref: Objects of Consciousness). Specifically, quantum wave-particles (protons, quarks, gluons, etc) are vibrations of interacting conscious agents .. or, vibrations of you and I interacting with existence and with each other. Physical properties such as position, momentum, and energy are properties of interacting conscious agents and are not there preexisting all the time but instead emerge 'on the fly' and only as we need it.
What's more .. this 'conscious agent' interaction does not include us perceiving the entirety of reality but instead we perceive and experience only that which promotes survival (determined mathematically by a 'fitness payoff function' according to Donald Hoffman, ref: (1) non-technical, Why You Don't Need The Truth To Survive | Donald Hoffman, (2) technical, Donald Hoffman's Fitness-Beats-Truth Theorem Part 1). Meaning, most of existence is outside of our perception and experience, like a tiny bubble in an infintely vast ocean of bubbles and fathomless deep and infinite space above. This is what Donald Hoffman means when he says our 'universe' is a 'tiny data structure' because it truly is. He and his team has derived mathematically that the probabllity of us being able to perceive 'the truth' (or the entirely of reality) is "exactly zero" because it is "infitely complicated".
What we (as 'conscious agents') DO engage in however is:
(1) soul, energetic or mental interaction with existence and other conscious agents (or some form of pre-quantum entanglement) which
(2) literally manifests quantum physics ('co-creation') and
(3) simulataneously collapses it's wave function equation, which in turn
(4) manifests or causes to emerge the material universe .. all 'on the fly' as we need it.
We unconsciously and naturally manifest this or 'create' all the time and aren't always aware of it. We can however cultivate a practice that allows us to mindfully create in full awareness versus unconsciously create (what we don't desire).
Use these skillfully crafted tees and other products as tools to remind, encourage and train yourself to manifest consciosuly, powerfully and easily.
Simple mental exercises (posting shortly).
For in-depth details (including technical) watch Andre Duqum - Donald Hoffman series BELOW, where they go deep into the concept that perception is not objective reality and in fact our experience of reality via the universe or 'VR headset' shows us zero percent of the complexity of reality, that 'spacetime' is not the final ground of being, that it's a trivial framework .. yes, the 'universe' is trivial:
Proof That Reality Is An ILLUSION: The Mystery Beyond Space-Time | Donald Hoffman
The Emerging Science: "We Are ONE Consciousness" - Life, Death & The Simulation | Donald Hoffman
The Greatest Discovery About Reality And The Consciousness Behind It | Donald Hoffman
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How Physicists Threw Away Spacetime In Favor Of Emergence
Journey towards emergence: The intellectual journey of modern physics reveals a profound and ongoing evolution in our understanding of reality. It began with the Classical Era, which was built upon the principles of locality (the rule that no information or causal influence can travel faster than light) and realism (the concept that objects possess definite, intrinsic properties independent of observation). This worldview, which saw the universe as a deterministic machine on a fixed stage, found its ultimate expression in General Relativity (GR), a theory that describes gravity as the curvature of a smooth, continuous, and fundamentally real spacetime.
This solid foundation was shattered by the Quantum Revolution. Quantum Theory (QT) demonstrated that the subatomic world is inherently probabilistic and operates on radically different principles. Crucially, through phenomena like quantum entanglement, it proved the universe is fundamentally non-local (exhibiting instantaneous correlations between distant particles that cannot be explained by any local, realistic model) and non-real (properties of particles are not defined until the moment of measurement, defying the classical idea of an objective reality). This created a deep schism: our best theory of the cosmos (GR) was local and real, while our best theory of its constituents (QT) was not.
For decades, physicists struggled to force these two conflicting theories into a single framework. We are now entering a third, more radical phase, driven by the failure of this direct reconciliation. This is the Era of Emergence. Leading theoretical physicists now posit a startling conclusion: spacetime itself is "doomed." This means the four-dimensional continuum of GR is not a fundamental ingredient of the universe. Instead, our experience of spacetime, along with the very rules of quantum physics, is likely an emergent phenomenon (a collective property that arises from the interactions of more fundamental, non-spatiotemporal constituents, much like the fluidity of water emerges from the collective behavior of individual molecules).
This suggests that the universe we perceive is a kind of holographic projection (a description where the information about a volume of space is encoded on a lower-dimensional boundary) from a more primitive, abstract reality that exists without concepts of "here," "now," or even "before." The ultimate quest is no longer to quantize the spacetime of GR, but to discover the underlying structure from which spacetime, locality, realism, and perhaps even quantum theory itself, all emerge.
It began with dreamers who unraveled the cosmos thread by thread. Young, like an archaeologist of light, exposed the first cracks in Newton’s rigid universe with his double slits, revealing light’s inherent duality, its capacity to be both particle and wave. Then Einstein, the revolutionary cosmic weaver, unstitched the very fabric of space and time: his relativity bent gravity into geometry, while E=mc² welded matter to energy, and his photons existed in a state of playful potential, always ready to become either particle or wave. Planck, reluctantly fathering the quantum, quantized reality itself, his blackbody calculations birthing discrete packets of energy where continuity once ruled.
Journey towards emergence: Here, the foundational schism was being laid. Newtonian physics was built on locality (influences propagate smoothly and continuously from one point to another) and realism (objects have definite properties like position and momentum independent of observation). The work of Young, Planck, and even Einstein on photons began to challenge this. Planck's quanta introduced discreteness where continuity ruled, and wave-particle duality suggested that the classical, realist view of objects was incomplete. Einstein's own General Relativity (GR), however, would become the ultimate expression of a local and realist theory, describing a definite spacetime fabric.
Heisenberg, with his uncertainty principle, etched the limits of knowledge into the fabric of the universe — measurement now a fundamental trade-off, where to know one thing perfectly, you must surrender knowledge of another. Schrödinger’s wave equation painted subatomic realms not as certainties, but as shifting probability clouds, though he recoiled from his own creation’s implications. Dirac, the unifier, braided quantum mechanics with relativity and conjured antimatter from pure mathematics, his equation a portal to a more fundamental reality. And Bell, the quiet dismantler of Einstein’s last hope, proved with cold logic that entanglement’s "spooky action" was no flaw — but a feature of reality itself.
Journey towards emergence: This period marked the solidification of the quantum challenge. Heisenberg and Schrödinger formalized a theory that was fundamentally non-real (particles lack definite properties until measured). Then, through the phenomenon of quantum entanglement, the theory revealed its non-locality (instantaneous correlations between distant particles), a concept Einstein famously derided as "spooky." John Bell's theorem provided a way to test this, and experiments confirmed that the universe violates local realism. This created the central conflict: General Relativity (a local, realist theory of spacetime) is incompatible with Quantum Theory (a non-local, non-real theory of matter and forces).
These were the architects. Their blueprints: Young’s wave-particle duality, Planck’s discrete energy leaps, Schrödinger’s shifting probability clouds, Heisenberg’s fundamental trade-off, Dirac’s unification of relativity and the quantum, Einstein’s relativistic geometry and Bell’s cosmic dialogue that is not bound by spacetime. Their legacy was forging a new architecture of the real, one founded upon pure mathematics, which opened doors for endless exploration.
It was then that a Cambridge physicist turned his gaze toward the void, who noticed it whisper subtle radiation, the faint thermal glow of black holes dissolving into quantum fog, In that glow, a paradox burned — information, the sacred currency of reality, seemed to vanish forever. The cosmos appeared to be eating its own secrets. The black hole information paradox, first formulated by Stephen Hawking in 1975, exposed a fundamental conflict between quantum mechanics and general relativity, necessitating a quantum theory of gravity. (And he might have had help from a largely unknow child prodigy, David Adair).
Journey towards emergence: Hawking's paradox was not a minor puzzle; it was a crisis that occurred where the two great theories, General Relativity and Quantum Theory, directly collided. The paradox suggested that the fundamental laws of quantum physics broke down in the face of gravity, implying that our understanding of spacetime itself was flawed. This crisis forced physicists to consider that the stage itself might be part of the play, leading to the radical idea of emergence (the concept that complex properties, like spacetime, arise from the collective interactions of simpler, more fundamental constituents).
Yet, a profound paradox does not confound nature; it is a portal to a deeper law. From this crisis bloomed the holographic principle of ’t Hooft and Susskind, physics' most radical act of ontological revolution. Not merely a theory but a koan: what if the three-dimensional theater of our existence — every galaxy, every falling leaf, every beating heart — is but an emergent shadow play cast from a two-dimensional boundary at infinity? The mathematics is precise (AdS/CFT correspondence, the Maldacena duality), yet its implications are mystical. Spacetime, that venerable stage, demoted to mere emergent phenomenon, its curvature and drama unfolding from entangled quantum bits like a Persian carpet weaving itself from threads of pure information.
Journey towards emergence: The holographic principle, developed by 't Hooft and Susskind and given a precise mathematical form by Maldacena, was the first concrete step in formalizing the "doom" of spacetime. It proposed that our apparently three-dimensional universe of spacetime and gravity is emergent from a two-dimensional quantum system that lives on its boundary. This directly addresses Hawking's paradox and provides a mechanism for how spacetime and locality themselves could be emergent phenomena, derived from a more fundamental, non-spatial reality of quantum information and entanglement.
Then arrived the amplituhedron, a discovery by Arkani-Hamed and Trnka so profound it rendered the agonizingly complex mathematics of particle collisions obsolete. This geometric oracle calculates outcomes directly, challenging the foundational principles of locality and unitarity, and suggests that spacetime and particle interactions are emergent phenomena and computational artifacts arising from a more fundamental, primordial geometry. Here, in this transcendental algebra (Grassmannian kinematics, scattering amplitudes without unitarity or locality), the 'surface' laws of physics (or 'play physics' for children, like a VR gaming headset) are actually projected manifestations of a far more elegant, fundamental linguistics or mathematics, a reality where 'before' and 'after' lose their absolute meaning, becoming mere perspectives within a higher-dimensional, crystalline geometry.
Our fundamental frameworks are fractured. The spacetime stage of relativity and the entangled, non-local world of quantum theory remain irreconcilable, and their mathematics, however successful, appears to describe an emergent layer of reality, not its ultimate source. The amplituhedron, however, points beyond this divide. It suggests the universe is computed in a native tongue of timeless, spaceless geometry.
The Classic Era view of the 'block universe' (spacetime) as a static four-dimensional thing has now been re-thought as emergent phenomenon originating from a deeper mathematical structure. 'Block universe' arises from the idea that space and time are unified ('one') into a single four-dimensional entity called spacetime. A 'block universe' is where time is not fundamental so why we perceive time as a flow is the hard problem of consciousness. As a powerful candidate for a new formalism the amplituhedron shows that the sequence of events is not primary but depends on how one 'slices' this higher-dimensional object. This challenges the very fundamentality of time, suggesting our conscious experience of a flowing "now" may be a profound illusion arising from a deeper, simultaneous existence.
Journey towards emergence: The work of Arkani-Hamed on the amplituhedron pushes the concept of emergence to its logical extreme. It suggests that not only is spacetime not fundamental, but even the core principles of Quantum Theory like locality and unitarity are themselves emergent from a deeper, pre-geometric reality. The amplituhedron calculates particle interactions without any reference to spacetime or causes and effects, implying that our entire experience of a physical universe unfolding in time and space is a computational artifact or a "user interface" derived from a more fundamental, timeless mathematical structure.
The message is clear: we have been trying to decode the 'emergent' universe in a language that is not the fundamental syntax. We are now learning our universe emerges from 'linguistics' or mathematics we don't natively speak yet, one where quantum physics and spacetime are emergent verses in a poem composed in a geometry we are only beginning to hear.
Next, all certainties are crumbled to dust, and we find ourselves breathing the air of a more brilliant dimension. If spacetime is not fundamental, then what is "here"? What is "now"? Donald Hoffman’s interface theory takes the next leap: perhaps the "universe" is a rendering - a real-time simulation run on the pre-quantum processors of existence itself. The implications detonate like silent supernovae: the stars we see, the ground beneath us, even the flow of time may be a 'VR headset'-like user interface of a deeper reality, a model of existence where perception continually renders both the quantum and spacetime - a generative mechanism of consciousness that assembles and edits the very stage on which it seems to perform .. where what we see is a species-specific data structure, computed and created by our consciousness for survival, not for accuracy or to see the entirety of reality ('the truth').
Journey towards emergence: Donald Hoffman's interface theory of perception provides a provocative psychological and evolutionary framework for these physical discoveries. If spacetime is emergent and not fundamental, as suggested by the holographic principle and the amplituhedron, then Hoffman argues that our perceptions of a local, realist world cannot be true glimpses of the underlying reality. Instead, he proposes that spacetime itself is a species-specific user interface—a simplified, symbolic dashboard shaped by evolution for fitness, not for truth. This places consciousness as a primary player in the emergence of our experienced reality, suggesting that the non-local, non-real quantum world is closer to the truth, and our classic spacetime experience is a useful illusion.
This is our latest physics and it isn't philosophy. It's the unbearable gradient our equations are climbing - from Hawking's paradox to the hologram's inescapable conclusion, from the amplituhedron's stunning geometric shortcut - bypassing the need for spacetime and causality to calculate reality, to the definitive evidence of participatory realism - proof that to observe is to co-author reality. We are not merely discovering new laws; we are uncovering the source code and operating system of emergent universes. We are glimpsing existence as it is, true 'seeing' .. and beginning to understand the primordial architecture of reality.
This is the actual work of 'hacking the matrix'.
The great work is no longer to explain the universe. It's to survive and thrive in the revelation of what it actually is. The 'universe' is our collective creation but with divine laws that unravel deeper .. and deeper .. and deeper.
Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; In ac dui quis mi consectetuer lacinia. Nam pretium turpis et arcu. Duis arcu tortor, suscipit eget, imperdiet nec, imperdiet iaculis, ipsum.
Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem.
Proof That Reality Is An ILLUSION: The Mystery Beyond Space-Time | Donald Hoffman
Video: In this thought-provoking episode, cognitive psychologist and author Donald Hoffman takes us on a journey through the mysteries of consciousness and reality. From questioning the nature of what we perceive to pondering the existence of inanimate consciousness, Hoffman challenges conventional beliefs and explores the profound implications of proving local realism false.
He delves into topics such as the illusion of free will, the role of love in metaphysics, and the possibility of reincarnation. Prepare to have your mind expanded as we contemplate the nature of reality itself and how this paradigm-shifting understanding will change everything.
Local realism in physics combines two principles:
Locality – No influence can travel faster than light (no instantaneous action at a distance).
Realism – Particles have definite properties (e.g., spin, position) even when not measured.
Quantum mechanics violates local realism, as shown by Bell's theorem and experiments (e.g., entangled particles). This suggests either:
Non-locality (instantaneous influences), or
Non-realism (no definite properties before measurement).
Most interpretations of QM reject local realism.
Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; In ac dui quis mi consectetuer lacinia. Nam pretium turpis et arcu. Duis arcu tortor, suscipit eget, imperdiet nec, imperdiet iaculis, ipsum.
Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem.
The Emergent Universe
The core idea of an "emergent universe" posits that spacetime, gravity, and the laws of physics are not fundamental but are collective phenomena that arise from more basic, often abstract, underlying structures. Just as temperature and pressure emerge from the collective motion of atoms (which themselves are not "hot" or "pressurized"), spacetime and gravity might emerge from something more fundamental, such as quantum bits (qubits) or entangled quantum states The following categories represent the leading frameworks for this concept.
Category 1: Holographic Duality (AdS/CFT correspondence or the Anti-de Sitter/Conformal Field Theory correspondence)
Key Idea:
A gravitational universe in d dimensions is fully encoded in a quantum field theory in d-1 dimensions. Spacetime is a holographic projection of quantum information.
This is the most rigorously defined and developed framework for emergence and is a holographic principle ( 1 , 2 , 3 ), suggesting a holographic relationship between a higher-dimensional spacetime (Anti-de Sitter space, or AdS) and a lower-dimensional quantum field theory (a conformal field theory, or CFT) living on its boundary. It posits a precise mathematical duality (a "dictionary") between a theory of gravity in a volume of space and a quantum field theory without gravity operating on that volume's lower-dimensional boundary. This makes the boundary theory the more fundamental description, from which spacetime and gravity emerge.
Proposed by Juan Maldacena in 1997, it implies that gravity in a d-dimensional AdS spacetime is mathematically equivalent to a quantum field theory without gravity in d-1 dimensions. For example, a 5D AdS space (describing string theory and gravity) can be fully encoded in a 4D CFT, like a supersymmetric Yang-Mills theory ( 1 , 2 ). This duality is a cornerstone of quantum gravity research, offering insights into black holes, emergent spacetime, and the deep connection between quantum mechanics and general relativity.
Leading Scientists:
Juan Maldacena was the first to propose the AdS/CFT correspondence in its precise, modern form in his seminal 1997 paper. But his work is based on the earlier work of Gerard 't Hooft and Leonard Susskind. The timeline and roles are:
Gerard ’t Hooft (1993): Proposed the holographic principle in the context of black hole thermodynamics, suggesting that a theory of quantum gravity could be described by a theory with one fewer dimension. This was the crucial conceptual precursor. (Ref: Dimensional Reduction in Quantum Gravity).
Leonard Susskind (1994-95): Co-developed the ER=EPR conjecture (see below) and has been a leading figure in interpreting the holographic principle's implications. (Ref: The World as a Hologram).
Juan Maldacena (1997): Provided the first concrete, mathematically rigorous realization of the holographic principle by discovering the precise duality between a specific gravitational theory in Anti-de Sitter space (AdS) and a specific Conformal Field Theory (CFT) on its boundary. (Ref: The Large N Limit of Superconformal Field Theories and Supergravity).
Key Papers:
1. ’t Hooft, G. (1993). [Dimensional Reduction in Quantum Gravity]. Salamfestschrift: A collection of talks, World Scientific Series in 20th Century Physics, vol. 4, 1-13.
2. Maldacena, J. (1999). [The Large N limit of superconformal field theories and supergravity]. International Journal of Theoretical Physics, 38(4), 1113–1133. (The seminal paper).
3. Susskind, L. (1995). [The World as a Hologram]. Journal of Mathematical Physics, 36(11), 6377–6396.
(( Adding additional categories very shortly .. ))
∗ Some theories (like loop quantum gravity or string theory) propose that spacetime is not fundamental but instead "pixelated" at the Planck scale (~10⁻³⁵ meters), emerging from quantum interactions.
∗ Example: In causal set theory, spacetime is a network of discrete events, and smooth geometry emerges statistically.
3. Laws of Physics as Emergent
∗ The rules governing the universe (like general relativity or quantum mechanics) might not be absolute but could instead arise from deeper computational or informational processes.
∗ Example: Thermodynamics emerges from statistical mechanics, suggesting that even gravity could be an "entropic force" (as in Erik Verlinde’s ideas).
4. Entanglement as the Fabric of Reality
∗ Quantum entanglement (where particles remain connected across vast distances) might be the basis for spacetime itself. The **ER=EPR conjecture** suggests that entangled particles are connected by tiny wormholes, implying that spacetime is built from quantum connections.
A chat with Deepseek
QUERY:
The current model of reality is based on Anti-De Sitter space (or negative De Sitter space) .. Leonard Susskind says no one is working on a normal De Sitter space model because it is too hard. Please explain what he means by this (getting this from https://youtu.be/2p_Hlm6aCok?si=8VpwBnTowXf-TFs4 where there are EXTENSIVE notes).
ANSWER:
Of course. This is an excellent question that gets to the heart of some of the biggest challenges in theoretical physics.
Let's break down what Leonard Susskind means, starting with the key terms.
1. De Sitter vs. Anti-De Sitter Space
First, we need to understand what these spaces are. In simple terms, they are both solutions to Einstein's equations of General Relativity for a universe that is empty except for a cosmological constant (a kind of energy inherent to space itself).
∗ De Sitter Space (dS): This describes an expanding universe with a positive cosmological constant. This is the shape our actual, real-world universe appears to have. The cosmological constant causes space to expand at an accelerating rate, which is what we observe. It's "normal" in the sense that it's our reality.
∗ Anti-De Sitter Space (AdS): This describes a universe with a negative cosmological constant. This kind of space is curved in on itself and is not expanding; in fact, it has a kind of "boundary" at spatial infinity. It does not describe our observable universe.
2. Why is Anti-De Sitter Space (AdS) So Popular?
If AdS doesn't describe our reality, why have physicists spent decades working on it? The answer is a profound discovery called the AdS/CFT correspondence (or holographic duality), pioneered by Juan Maldacena in 1997.
This correspondence provides a "duality":
∗ A theory of gravity in an Anti-de Sitter space (the "bulk" of the universe)
∗ is mathematically equivalent to
∗ A conformal field theory (CFT) without gravity living on its boundary (like a hologram on the edge).
This is a monumental breakthrough because:
∗ It's a Tool for Quantum Gravity: It allows physicists to study problems in quantum gravity (which is incredibly hard) by translating them into problems in a well-understood quantum field theory without gravity (which is much easier).
∗ It's a Mathematical Playground: It provides a well-defined, mathematically tractable "laboratory" to explore deep questions about black holes, information paradoxes, and the fundamental nature of spacetime.
In short, AdS is popular not because it's real, but because it's solvable. It provides a working model where deep principles can be tested and understood.
3. Why is "Normal" De Sitter Space (dS) "Too Hard"?
Now, let's get to Susskind's point. Our universe is a de Sitter space. We desperately want an analogous "dS/CFT" correspondence to understand quantum gravity in our actual reality. But it's proven incredibly difficult. Here’s why:
1. The Boundary Problem: AdS has a nice, timelike boundary at spatial infinity where the dual quantum field theory lives. Our expanding de Sitter universe does not have such a convenient boundary. Its future boundary ("scattering amplitudes" at infinite time) is more subtle and harder to define a theory on. It's like trying to project a hologram onto a surface that is constantly fading away.
2. Finite Observables & The Horizon Problem: Every observer in de Sitter space is surrounded by a cosmological horizon (similar to a black hole event horizon). You can only ever see a finite patch of the universe. This makes defining precise quantum states and observables very tricky. In AdS, an observer can, in principle, see the whole universe and its boundary.
3. Temperature and Instability: Empty de Sitter space has a temperature (the Gibbons-Hawking temperature). This means it's not a true vacuum; it's a thermal state. Thermal states are inherently noisy and involve mixed states, which are harder to work with than the pure states common in AdS. Furthermore, this temperature suggests de Sitter space might be unstable or metastable over very long timescales, adding another layer of complexity.
4. Lack of a "Nice" Duality: While there are conjectures about a dS/CFT duality, no one has found one that is as powerful, precise, and computationally useful as the AdS/CFT correspondence. It's the difference between having a complete, detailed instruction manual (AdS/CFT) and having a few vague, promising clues (dS/CFT).
Summary: The Susskind Quote in a Nutshell
When Susskind says "no one is working on a normal de Sitter space model because it is too hard," he means:
"Physicists have a powerful, working toolkit (AdS/CFT) for studying quantum gravity in a simplified, unrealistic universe (Anti-de Sitter space). We all want to apply these tools to our real universe (de Sitter space), but the mathematical and conceptual problems are so profound that progress is extremely slow. Therefore, the vast majority of research and papers in quantum gravity still use the AdS model because it's the only one that gives clear, calculable answers, even if they aren't directly applicable to reality."
It's a classic case of physicists working on the problem they can solve, rather than the one they want to solve, hoping that the lessons learned will eventually pave the way to understanding the real, de Sitter world we live in.
QUERY:
Briefly .. how can you have a theory of gravity in AdS/CFT if gravity is not allowed to live even on its boundary? And in dS the ‘surface is constantly fading away’ as you described, does that mean there is no boundary? If so, if gravity is not allowed to live even on the boundary of AdS/CFT, where is gravity to be found in dS theory or where does gravity begin?
ANSWER:
Excellent and deep questions. These get to the absolute core of the mystery. Let's break them down.
1. Gravity on the Boundary of AdS?
How can you have a theory of gravity in AdS/CFT if gravity is not allowed to live on its boundary?
The key is to understand what the word "duality" means. It's not that gravity exists on the boundary. It's that the theory on the boundary is a complete, alternative description of the same physics.
∗ The Boundary Theory (CFT): This is a quantum field theory that lives on a fixed, non-gravitational, flat spacetime (the boundary). It has no gravity. It describes particles and forces interacting.
∗ The Bulk Theory (AdS Gravity): This is a theory of quantum gravity in the entire interior volume.
The miracle of AdS/CFT is that these two completely different-sounding theories are mathematically equivalent. They are two languages describing the same reality.
∗ An object like a black hole in the bulk (a gravitational object) has an exact translation: it is a specific, hot, dense state of the particles in the boundary theory.
∗ The act of gravity bending spacetime in the bulk is encoded in the quantum entanglement of the particles on the boundary.
So, gravity isn't "on" the boundary. The boundary theory is a hologram that encodes all the information needed to RECONSTRUCT the entire gravitational universe inside it. The gravity EMERGES from the description.
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2. The Boundary in De Sitter Space?
In dS the ‘surface is constantly fading away’ as you described, does that mean there is no boundary?
This is a subtle but crucial difference.
∗ AdS has a Spatial Boundary: Imagine an infinite cylinder. You can walk forever and never reach the end. The boundary is a place far away in space.
∗ dS has a Future Temporal Boundary: Imagine an expanding balloon. There is no edge in space. However, as time goes to infinity, the expansion pulls everything apart. The "boundary" is not a place you can travel to; it's the infinite future.
So, dS does have a boundary, but it's a boundary in time, not in space. This makes it infinitely harder to work with. You can't easily set up a nice, stable quantum theory "on" the future. It's an endpoint, not a stable stage. (NOTE, ASK DEEPSEEK TO FURTHER CLARIFY AdS infinte cylinder vs dS ballon).
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3. Where is Gravity in dS?
If gravity is not allowed to live even on the boundary of AdS/CFT, where is gravity to be found in dS theory or where does gravity begin?
This is the multi-million-dollar question. There are two main lines of thought, and we don't know the answer:
1. The Holographic Hope (dS/CFT): The hope is that a duality exists for de Sitter space. In this case:
∗ The theory of quantum gravity in the entire expanding bulk of our dS universe would be dual to a non-gravitational quantum theory living on the future boundary.
∗ Just like in AdS/CFT, gravity in our universe would not "be" on that boundary. Instead, it would be ENCODED in the properties of that future boundary theory. Gravity would "begin" as an EMERGENT property from that encoding.
2. The Global View vs. The Observer's View: This is perhaps the deeper insight.
∗ In dS, every observer is trapped inside their own cosmological horizon. No one can see the whole universe; everyone has a limited, finite patch of space they can ever access.
∗ This suggests that the fundamental description of physics might be LOCAL TO EACH OBSERVER. There may not be one single "theory of the whole universe." (NOTE, ASK DEEPSEEK: compare to Hoffman's conscious agent-conscious agent interaction where quantum + Newtonian is created on the fly PER OBSSERVER. Hoffman's math can use dS in other words.)
∗ In this view, gravity "begins" right here, in your observable patch. The hologram might not be on a faraway boundary, but *on your own cosmological horizon*. Your horizon contains all the information needed to describe everything inside it.
In summary: For AdS, we have a beautiful answer: gravity in the volume is a holographic projection of a non-gravitational theory on a spatial boundary. For dS, we lack the answer. Gravity might be encoded on a fuzzy future boundary, or, more likely, it might be a local, emergent property defined within the finite observable universe of each individual observer. This lack of a clear "stage" for the hologram is what makes it "too hard."
Nima Arkani-Hamed - Why is Quantum Gravity So Significant?
Nima Arkani-Hamed is a prestigious physicist who belives our old understanding of spacetime is 'doomed' (as do most physicists). That is, space, time and matter are no longer considered the fundamental reality, but deeper mathematical objects are (the amplituhedron, etc).
Quantum theory explains how particles and fields work. General relativity, discovered by Einstein, explains how gravity generates the structure of the universe. But the two great theories of physics and cosmology are not compatible. But this is impossible because both describe reality. Only a solution to quantum gravity can solve the huge problem. Nima Arkani-Hamed (born 5 April 1972) is a Canadian/American theoretical physicist with interests in high-energy physics, string theory and cosmology. Formerly a professor at Harvard, Arkani-Hamed is now on the faculty at the Institute for Advanced Study at Princeton.
Other lectures by Nima Arkani-Hamed
Nima Arkani Hamed: The End of Space Time 1 of 3
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CERN Scientist Goes Viral After Exposing the Illusion We Live In
SHORT VIDEO (above) - Dr. Bernardo Kastrup worked at CERN. He spent years deep inside the world of high-level science and technology. But something didn’t add up. Today, he’s one of the few respected voices claiming that reality is not made of matter — it’s made of mind. According to him, everything we experience is a projection of consciousness, and the physical world is just a mental illusion. His ideas are shaking the foundations of science — and revealing truths many still refuse to accept.
FULL VIDEO - Is Consciousness The Final Reality? - Questioning The Material Universe | Dr. Bernardo Kastrup
Ex CERN Scientist .. The interview explores the fundamental premises of Analytic Idealism. Dr. Bernardo Kastrup, known for developing this philosophical system, discusses the nature of consciousness, life, God, and AI with Natalia Vorontsova.
Dr. Bernardo Kastrup posits our senses and what we experience is like a 'dashboard' (like a computer screen or virtual reality headset) that our senses give us a very limited view of existence only for the sake of survival.
He says there is a Mind that is omniscient, omnipresent and omninpotent. Mind is the only thing that exsits. We are it. He argues that panentheism (God transcends the universe) is close to the truth as our evolution (perceptual apparatus we have acquired through evolution) still doesn't allow us to sense all that there is in existence. We haven't evolved to cognize everything to be cognized.
He says that the material universe is only mental and mind is all that exists (under Analytical Idealism). Matter is what mind or mental states look lke (appearances). Physicists deal with the world of these appearances but physicusts don't have the full picture.
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Fusions of Consciousness (Dr Donald Hoffman, 2022)
Cognitive neuroscientist Dr Donald Hoffman posits space and time is not fundamental and that all of reality is literally manifest only in our mind .. his work includes mathematically describing consciousness, where he has found that the basic components of his theory (‘conscious agents’, more or less us) are perfectly described by the quantum wave function equation, This means our mind and quantum physics are almost the same thing.
Donald Hoffman's theory that the interaction of conscious agents creates spacetime is discussed in several of his works, but one key paper that explicitly addresses this idea is:
Fusions of Consciousness
Published in Entropy (Basel)
January 9 2023
Donald D Hoffman
Chetan Prakash
Robert Prentner
Department of Cognitive Sciences, University of California, Irvine, CA 92697, USA
Department of Mathematics, California State University, San Bernadino, CA 92407, USA
Association for Mathematical Consciousness Science, D-80539 Munich, Germany
Munich Center for Mathematical Philosophy, LMU Munich, D-80539 Munich, Germany
Ref: Fusions of Consciousness (PDF)
Ref: Fusions of Consciousness (PubMed)
Ref: Fusions of Consciousness (MDPI)
Key Points from the Paper:
1. Conscious Agents as Fundamental:
∗ Hoffman and colleagues propose that spacetime is not fundamental but emerges from the interactions of "conscious agents" — mathematical entities whose dynamics are described by Markov chains
∗ They argue that spacetime is a "data structure" projected from these interactions, analogous to how a computer interface simplifies underlying code
2. Markov Chains and Decorated Permutations:
∗ The paper links the dynamics of conscious agents to scattering amplitudes in physics, using decorated permutations (a tool from particle physics) to map agent interactions onto spacetime processes (ref: Fusions of Consciousness {PubMed}), including literally offering a new model for particle interactions as observed at the Large Hadron Collider (LHC) at CERN in Switzerland .. or in layman's terms the interactions of US (the conscious agents) results in quantum effects and the creation of spacetime ('on the fly' as we need it as he explains)
3. Critique of Spacetime Fundamentalism:
∗ The work builds on Hoffman’s earlier claims (e.g., in The Case Against Reality) that evolution hides true reality, which is a network of interacting conscious agents (ref: The Case Against Reality | Prof. Donald Hoffman on Conscious Agent Theory)
Abstract: What are conscious experiences? Can they combine to form new experiences? What are conscious subjects? Can they combine to form new subjects? Most attempts to answer these questions assume that spacetime, and some of its particles, are fundamental. However, physicists tell us that spacetime cannot be fundamental. Spacetime, they say, is doomed. We heed the physicists, and drop the assumption that spacetime is fundamental. We assume instead that subjects and experiences are entities beyond spacetime, not within spacetime. We make this precise in a mathematical theory of conscious agents, whose dynamics are described by Markov chains. We show how (1) agents combine into more complex agents, (2) agents fuse into simpler agents, and (3) qualia fuse to create new qualia. The possible dynamics of n agents form an n(n-1)-dimensional polytope with nn vertices-the Markov polytope ($M_n$). The total fusions of n agents and qualia form an (n-1)-dimensional simplex-the fusion simplexFn. To project the Markovian dynamics of conscious agents onto scattering processes in spacetime, we define a new map from Markov chains to decorated permutations. Such permutations-along with helicities, or masses and spins-invariantly encode all physical information used to compute scattering amplitudes. We propose that spacetime and scattering processes are a data structure that codes for interactions of conscious agents: a particle in spacetime is a projection of the Markovian dynamics of a communicating class of conscious agents.
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Objects of Consciousness (Dr Donald Hoffman, 2014)
Donald D. Hoffman
Chetan Prakash
Department of Cognitive Sciences, University of California, Irvine, 92697, USA
Department of Mathematics, California State University, San Bernardino, 92407, USA
2014
A mathematical description of consciousness, particularly the bottom right of page 13 (PDF) where he describes consciousness with the wavefunction equation.
Abstract: Current models of visual perception typically assume that human vision estimates true properties of physical objects, properties that exist even if unperceived. However, recent studies of perceptual evolution, using evolutionary games and genetic algorithms, reveal that natural selection often drives true perceptions to extinction when they compete with perceptions tuned to fitness rather than truth: Perception guides adaptive behavior; it does not estimate a preexisting physical truth. Moreover, shifting from evolutionary biology to quantum physics, there is reason to disbelieve in preexisting physical truths: Certain interpretations of quantum theory deny that dynamical properties of physical objects have definite values when unobserved. In some of these interpretations the observer is fundamental, and wave functions are compendia of subjective probabilities, not preexisting elements of physical reality. These two considerations, from evolutionary biology and quantum physics, suggest that current models of object perception require fundamental reformulation. Here we begin such a reformulation, starting with a formal model of consciousness that we call a “conscious agent.” We develop the dynamics of interacting conscious agents, and study how the perception of objects and space-time can emerge from such dynamics. We show that one particular object, the quantum free particle, has a wave function that is identical in form to the harmonic functions that characterize the asymptotic dynamics of conscious agents; particles are vibrations not of strings but of interacting conscious agents. This allows us to reinterpret physical properties such as position, momentum, and energy as properties of interacting conscious agents, rather than as preexisting physical truths. We sketch how this approach might extend to the perception of relativistic quantum objects, and to classical objects of macroscopic scale.
Ref: Objects of Consciousness (PDF)
Ref: Objects of Consciousness (Froniers in Psychology)
Related Works:
∗ The preprint "Traces of Consciousness" (2024) also explores how observers (modeled as conscious agents) are integral to physical systems, though it focuses more on quantum observation than spacetime emergence (ref: Traces of Consciousness)
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Thomas Young and the Classic Double Slit Experiment of 1801
The double-slit experiment was first performed by Thomas Young in 1801. Young conducted the experiment in England to demonstrate the wave-like nature of light. The experiment involves passing light through two closely spaced slits and observing the resulting pattern on a screen behind the slits. Young's observations showed an interference pattern, which provided evidence that light behaves as a wave rather than a particle, contradicting Isaac Newton's particle theory of light.
In the modern version of the experiment, scientists have used electrons and other particles instead of light, and observed similar wave-like behavior. When a detector is set up to observe which slit a particle passes through, the interference pattern disappears, and the particles behave as if they are classical particles, each passing through one slit or the other.
This phenomenon highlights the principles of wave-particle duality and the role of observation in quantum mechanics, suggesting that the act of measurement can influence the behavior of particles.
Interference pattern --> Observation --> Results in particle pattern
This equation symbolically represents the transformation from an interference pattern to a particle pattern upon observation.
Below is a chronological timeline of key developments in the double-slit experiment, with direct links to scholarly references (READ MORE: Chronology Of Significant Developments).
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Actual measuring and observing the wave function collapse
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In the 1920s, Clinton Davisson and Lester Germer at Bell Labs (15), along with George Paget Thomson (14) working independently, demonstrated electron diffraction. They showed that electrons (which were thought to be particles) could create interference patterns similar to waves. This was the first experimental confirmation of Louis de Broglie's hypothesis about matter waves.
In 1923, Arthur Compton's (10) experiments with X-ray scattering provided further evidence that light behaved as both waves and particles.
Claus Jönsson (17) performed the first electron double-slit experiment in 1961, which more directly paralleled Young's original experiment but with electrons instead of light.
The first direct observation of the wave function collapse in real time required much more advanced technology. In the 1980s, researchers like Alain Aspect (22) performed experiments that demonstrated quantum measurement effects, though these weren't exactly double-slit experiments.
The complete visualization of the buildup of the interference pattern one particle at a time wasn't clearly demonstrated until a 1989 experiment by Tonomura et al. at Hitachi (23), where they used electrons in a double-slit-type arrangement and recorded the gradual buildup of the interference pattern, showing both the wave-like interference and particle-like detection.
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Here’s a chronological timeline of key developments in the double-slit experiment and the later synthesis of quantum mechanics, which contributed to wave function collapse views (and that spacetime is not fundamental).
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1. Thomas Young (1804)
"Experiments and Calculations Relative to Physical Optics". Philosophical Transactions of the Royal Society of London, 94, 1–16, Young’s own account of his double-slit experiment, including interference patterns and wave theory arguments.
Ref: The Bakerian Lecture. Experiments and calculations relative to physical optics
Ref: Original (PDF)
2. Augustin-Jean Fresnel (1815-1827)
Advanced Young's wave theory of light through mathematical models and experimental work on diffraction, interference, and polarization.
Ref: J. ELSTER et H. GEITEL. - Ueber die Electricitätsentwiekelung bei der Tröpfchenreibung (Production d'électricité par le frottement des gouttelettes liquides); Wied. Ann., t. XXXII, p. 74; 1887
3. James Clerk Maxwell (1864-1873)
Unified electricity, magnetism, and optics with electromagnetic theory, proving light is an electromagnetic wave.
Ref: VIII. A dynamical theory of the electromagnetic field
4. Max Planck (1900)
Introduced quantum theory by proposing that energy is emitted in discrete packets (quanta) to solve the ultraviolet catastrophe problem in blackbody radiation. He didn't directly address wave-particle duality, viewing his quantum hypothesis as a mathematical convenience.
Ref: Ueber das Gesetz der Energieverteilung im Normalspectrum
5. Albert Einstein (1905)
Revived the particle concept of light with his explanation of the photoelectric effect, proposing that light consists of discrete quanta (later called photons). However, he didn't reject the wave theory, instead creating tension between the two models.
Ref: Über einen die Erzeugung und Verwandlung des Lichtes betreffenden heuristischen Gesichtspunkt
6. G.I. Taylor’s Low-Intensity Light Experiment (1909)
Showed interference patterns with dim light (single photons), hinting at quantum behavior.
Ref (original): Mr Taylor, Interference Fringes With Feeble Light
7. Louis de Broglie (1924)
Made the revolutionary proposal that not just light but all matter has wave properties, with his famous wavelength formula. This was initially a theoretical proposition without experimental confirmation.
Ref: Recherches sur la théorie des Quanta
8. Niels Bohr (1913-1927)
Developed the complementarity principle, arguing that wave and particle descriptions are complementary aspects of reality that cannot be observed simultaneously. He was central to developing the 'Copenhagen interpretation'.
The Copenhagen interpretation, primarily developed by Niels Bohr and Werner Heisenberg, states that quantum systems exist as probability distributions (wave functions) until measured, at which point they "collapse" into definite states, implying that physical properties don't exist in a defined state until they are observed.
Ref: I. On the constitution of atoms and molecules
9. The Stern-Gerlach experiment (1922)
This demonstrated that quantum systems (like silver atoms) do not have predefined spin states before measurement—instead, their wavefunction collapses into discrete eigenstates (spin-up or spin-down) upon interaction with the inhomogeneous magnetic field, revealing the probabilistic nature of quantum measurement. The experiment showed that measurement (via the magnetic field) forces a quantum system to "choose" a definite state, a cornerstone of wavefunction collapse in the Copenhagen interpretation.
Ref: Der experimentelle Nachweis der Richtungsquantelung im Magnetfeld
Ref: Stern–Gerlach experiment (Wikipedia)
Ref: How the Stern–Gerlach experiment made physicists believe in quantum mechanics
10. Arthur Compton (1923)
Compton discovered that when X-rays hit electrons, they bounce off like billiard balls rather than waves, showing that light (which we knew behaved as waves) can also act like particles.
Ref: A Quantum Theory of the Scattering of X-rays by Light Elements
11. Werner Heisenberg (1925-1927)
Formulated matrix mechanics and the uncertainty principle, which implied fundamental limits to measuring conjugate properties like position and momentum, supporting the idea that observation affects quantum systems.
Ref: Über quantentheoretische Umdeutung kinematischer und mechanischer Beziehungen.
12. Erwin Schrödinger (1926)
Developed wave mechanics and the wave equation that bears his name. Though his equation describes quantum systems as waves, he was uncomfortable with the Copenhagen interpretation.
Ref: Quantisierung als Eigenwertproblem
13. Max Born (1926)
Introduced the probability interpretation of the wave function, suggesting that Schrödinger's waves represent probability amplitudes rather than physical waves.
Ref: Quantenmechanik der Stoßvorgänge
14. George Paget Thomson (1927)
Working independently from Davisson and Germer, Thomson proved that electrons create wave-like patterns when passed through thin metal foils, further demonstrating matter's wave-like properties.
Ref: Experiments on the diffraction of cathode rays
15. Clinton Davisson and Lester Germer at Bell Labs (1927)
They showed that electrons (which we thought were just particles) can bounce off crystals in patterns similar to how waves ripple through water, confirming that matter can behave like waves.
Ref: Diffraction of Electrons by a Crystal of Nickel
16. Paul Dirac (1928)
Unified quantum mechanics with special relativity and predicted antimatter. He developed a more complete mathematical framework for quantum mechanics.
Ref: The quantum theory of the electron
17. Claus Jönsson (1961)
Jönsson performed the first true double-slit experiment with electrons, showing that single electrons create interference patterns as if they were going through both slits simultaneously.
Ref: Elektroneninterferenzen an mehreren künstlich hergestellten Feinspalten
18. John Stewart Bell (1928–1990) was a Northern Irish physicist who worked at CERN and made groundbreaking contributions to quantum mechanics. In 1964, he published Bell’s Theorem, which resolved a long-standing debate between Einstein and Bohr about the nature of quantum entanglement. Bell mathematically proved that if quantum mechanics is correct, then local hidden-variable theories (which Einstein favored) cannot explain the strong correlations observed in entangled particles. His work showed that quantum mechanics violates local realism, meaning particles can influence each other instantaneously across vast distances ("spooky action at a distance").
Bell’s findings were experimentally confirmed starting in the 1970s (e.g., by Clauser, Freedman, and later Aspect), demonstrating that quantum entanglement defies classical intuition. While his theorem doesn’t directly address wave function collapse, it undermines deterministic interpretations (like hidden variables) and supports the nonlocal, probabilistic nature of quantum mechanics.
Ref (original): ON THE EINSTEIN PODOLSKY ROSEN PARADOX*
Ref: Bell's theorem (Scholarpedia)
Ref: Quantum Milestones, 1964: John Stewart Bell Quietly Rings in New Era of Quantum Theory
Ref: How Bell’s Theorem Proved ‘Spooky Action at a Distance’ Is Real (The root of today’s quantum revolution was John Stewart Bell’s 1964 theorem showing that quantum mechanics really permits instantaneous connections between far-apart locations.)
Ref: Physics StackExchange query: wave function collapse
19. Merli, Missiroli & Pozzi’s Single-Electron Buildup (1974)
Demonstrated interference patterns emerging statistically from single electrons.
Ref: The Merli–Missiroli–Pozzi Two-Slit Electron-Interference Experiment
20. Wootters & Zurek’s Which-Path Experiments (1979–1987)
Formalized the observer effect by showing how path information degrades interference.
Ref: Complementarity in the double-slit experiment: Quantum nonseparability and a quantitative statement of Bohr's principle
21. John Wheeler (1978)
Wheeler’s paper (The 'Past' and the 'Delayed-Choice' Double-Slit Experiment) explores the philosophical and quantum mechanical implications of the delayed-choice experiment, arguing that measurements made after a photon passes through a double slit can retroactively (affecting the past) determine whether it behaved as a particle or wave earlier.
Ref: The “Past” and the “Delayed-Choice” Double-Slit Experiment
Ref: Original paper (p9-48 in The Mathematical Foundations Of Quantum Theory)
22. Alain Aspect (1982)
Aspect proved that measuring one particle instantly affects its entangled partner regardless of distance, confirming quantum theory's prediction of "spooky action at a distance" that Einstein had rejected.
Ref: Experimental Realization of Einstein-Podolsky-Rosen-Bohm Gedankenexperiment: A New Violation of Bell's Inequalities
23. Tonomura et al. (1989)
Using advanced electron microscopy, they showed individual electrons arriving one by one at a detector gradually build up an interference pattern, visually demonstrating the wave-particle duality paradox.
Ref: Demonstration of single‐electron buildup of an interference pattern
24. Anton Zeilinger’s Quantum Eraser (1990s–2000s)
Delayed-choice experiments challenging classical causality.
Ref: Experimental delayed-choice entanglement swapping
25. Markus Arndt, Olaf Nairz, Julian Vos-Andreae, Claudia Keller, Gerbrand van der Zouw, Anton Zeilinger
Buckminsterfullerene (C₆₀) Interference (1999) .. extended wave-particle duality to large molecules.
Ref: Wave–particle duality of C60 molecules
26. Frabboni’s Nanofabricated Slits (2012)
Precision single-electron interference using nanoscale slits.
Ref: The Young-Feynman two-slits experiment with single electrons: Build-up of the interference pattern and arrival-time distribution using a fast-readout pixel detector
27. Professor Riccardo Sapienza and his team (2018)
Imperial physicists have recreated the famous double-slit experiment, which showed light behaving as particles and a wave, in time rather than space.
Ref: Double-slit experiment that proved the wave nature of light explored in time
Ref: Double-slit time diffraction at optical frequencies
Werner Heisenberg and Niels Bohr
Werner Heisenberg and Niels Bohr were the first classical physicists to concretely argue (mathematically) that quantum systems exist as probability distributions (wave functions) until measured, at which point they "collapse" into definite states, implying that physical properties don't exist in a defined state until they are observed.
Werner Heisenberg and Niels Bohr's views were initially driven by theoretical and mathematical considerations, but they were also deeply influenced by emerging experimental evidence that classical physics could not explain. Here’s how theory and experiment interacted in the development of their ideas:
Theoretical and Mathematical Foundations
Heisenberg’s matrix mechanics (1925) and Schrödinger’s (11) wave mechanics (1926) provided mathematical frameworks that described quantum systems probabilistically.
Heisenberg’s uncertainty principle (1927) mathematically showed that certain pairs of physical properties (e.g., position and momentum) could not be simultaneously defined with arbitrary precision, reinforcing the idea that quantum states were not deterministic before measurement.
Bohr’s Copenhagen Interpretation (late 1920s) synthesized these ideas, proposing that quantum systems exist in superpositions (wave functions) until measurement forces a collapse.
The Copenhagen interpretation of quantum mechanics was primarily developed by Niels Bohr, with significant contributions from Werner Heisenberg and others, such as Max Born and Wolfgang Pauli.
Bohr was the central figure in formulating the philosophical and conceptual framework, emphasizing complementarity (the idea that quantum systems can exhibit wave-like or particle-like properties depending on the experimental setup, but never both simultaneously in the same experiment).
Heisenberg contributed key ideas like the uncertainty principle and the mathematical formalism, but the broader interpretive framework was more strongly shaped by Bohr.
Niels Bohr’s view of the Copenhagen interpretation centered on the idea that quantum mechanics does not describe an objective reality independent of measurement but instead provides a framework for predicting the outcomes of experiments. Regarding the collapse of the wave function, Bohr argued that the act of measurement forces a quantum system to transition from a superposition of states (described by the wave function) to a definite classical outcome, but he avoided ontological claims about what really "happens" to the system. Unlike some later interpretations (e.g., von Neumann's explicit collapse postulate), Bohr did not treat the collapse as a physical process but rather as a shift in our knowledge—once a measurement is made, the wave function updates to reflect the new experimental context. He emphasized complementarity, meaning that quantum objects exhibit wave-like or particle-like behavior depending on the measurement apparatus, and the wave function’s collapse simply reflects the necessary choice of experimental conditions. For Bohr, the wave function was primarily a calculational tool rather than a direct representation of reality, and its collapse was part of the unavoidable classical-quantum divide since all measurements must ultimately be expressed in classical terms, the quantum description "collapses" to a classical result upon observation.
Ref: Copenhagen Interpretation of Quantum Mechanics
Ref: Collapse Theories
Supporting Experimental Evidence
While Bohr and Heisenberg did not have direct "wavefunction collapse" experiments (such as later quantum measurement tests), their ideas were motivated by key experimental results that classical physics could not explain:
Blackbody Radiation (1900, Planck {4}): Quantized energy levels suggested discrete, probabilistic emission/absorption.
Photoelectric Effect (1905, Einstein {5}): Showed light behaving as quanta (photons), supporting particle-wave duality.
Atomic Spectra (Bohr’s 1913 Model): Discrete emission lines hinted at quantized electron orbits.
Stern-Gerlach Experiment (1922): Demonstrated quantized angular momentum (spin), incompatible with classical trajectories.
Double-Slit Experiments (e.g., Davisson-Germer, 1927 {14}): Showed wave-like interference for particles (electrons), suggesting superposition until detection.
Indirect Validation
The mathematical formalism (e.g., Born’s rule for probabilities, 1926) consistently predicted experimental outcomes, lending credibility to the idea that wavefunctions described reality prior to measurement.
Later experiments retrospectively reinforced their early insights, like:
Quantum entanglement tests (EPR, Bell’s Theorem, 1960s–70s)
Delayed-choice experiments (Wheeler, 1970s)
Modern quantum superposition tests (e.g., large molecules in interferometry)
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The Case Against Reality | Prof. Donald Hoffman on Conscious Agent Theory
Video: In this extended interview we dive into: (1) the Interface Theory of Perception (how evolution hides the truth about reality in favor of a dumbed down "user interface" that only shows us "fitness payoffs" that help us survive), (2) the "Hard Problem of Consciousness" and how we simply have no idea how consciousness could emerge from physical matter, (3) the non-dual theory of Conscious Realism (how reality is really a social network of "conscious agents" and our perceptions are simply the interface by which we exchange experience with other agents), (4) the math behind conscious agent theory, (5) implications for artificial intelligence (AI), psychedelics, spirituality, and much, much more.
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Maecenas tempus, tellus eget condimentum rhoncus, sem quam semper libero, sit amet adipiscing sem neque sed ipsum. Nam quam nunc, blandit vel, luctus pulvinar, hendrerit id, lorem.
2022 Nobel Prize in Physics Confirming Quantum Entanglement
The 2022 Nobel Prize lureates' views on spacetime
Nobel Prize in Physics 2022
The Nobel Prize in Physics 2022 was awarded jointly to Alain Aspect, John F. Clauser and Anton Zeilinger "for experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science"
Ref: Nobel Prize in Physics 2022
Ref: Proving that Quantum Entanglement is Real
Ref: “What If Physics IS NOT Describing Reality”
Anton Zeilinger has expressed views suggesting that information might be more fundamental than spacetime, that quantum information precedes spacetime — a view gaining traction in quantum gravity and foundational physics.
1. Quantum Entanglement and Non-Locality
∗ Zeilinger’s experiments (e.g., loophole-free Bell tests) demonstrated that entangled particles correlate instantaneously across large distances, violating classical notions of locality
∗ He argues that these correlations suggest quantum information (e.g., shared states) transcends spacetime constraints, hinting at a deeper informational structure.
2. Foundational Principle of Quantum Mechanics
∗ Influenced by Carlo Rovelli’s relational quantum mechanics, Zeilinger proposed that quantum states are defined by information between observers rather than absolute spacetime properties
∗ His 1999 paper "A Foundational Principle for Quantum Mechanics" posits that quantum phenomena emerge from information invariance under complementary measurements.
3. Spacetime as an Emergent Phenomenon
∗ In collaborations with quantum gravity researchers, Zeilinger has speculated that spacetime might arise from entanglement networks, akin to holographic or tensor-network models.
∗ This aligns with ideas like ER=EPR (entanglement ≈ wormholes), where spacetime geometry is encoded in quantum correlations.
4. Key Quotes
∗ "The universe is not locally real": Zeilinger’s Nobel-accepted conclusion rejects spacetime as an absolute stage.
∗ "Quantum correlations exist without spacetime mediation", implicit in his teleportation experiments (e.g., 1997).
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Quantum Information Panpsychism Explained | Federico Faggin
Video: CPU inventor and physicist Federico Faggin, together with Prof. Giacomo Mauro D'Ariano, proposes that consciousness is not an emergent property of the brain, but a fundamental aspect of reality itself: quantum fields are conscious and have free will. In this theory, our physical body is a quantum-classical ‘machine,’ operated by free will decisions of quantum fields. Faggin calls the theory 'Quantum Information Panpsychism' (QIP) and claims that it can give us testable predictions in the near future. If the theory is correct, it not only will be the most accurate theory of consciousness, it will also solve mysteries around the interpretation of quantum mechanics.
[** Note: by classical Dr Faggin is referring to the 'outer' material world, where A-to-B spacial distance is experiencd, and all the laws of Newton (force and gravity) .. where the quantum world is the spaceless and timeless world of the atom and it's subatomic interactions, which don't obey Netwon's spacetime laws. So this is what he means where below he says (1) "conversion of information from classical to quantum" BY US the 'conscious agent' and (2) "The theory provides that a conscious agent may intentionally convert quantum information into a specific classical information to express its free will".
These are the scientists who are right now contributing to the math that will enable advanced stargates that operate by thought .. ie, thinking of the place then stargating there. Apparently we aleady have stargates of some sort in the DUMBS (deep underground military bases, ref: Emery Smith, circa 2018).]
Hard Problem and Free Will: an information-theoretical Approach (2021)
Giacomo Mauro D’Ariano and Federico Faggin
Summary of paper: We have presented a theory of consciousness, based on principles, assumptions, and
key concepts that we consider crucial for the robustness of the theory and the removal
of the limitations of most panpsychist theories. We believe that conferring inner
reality and agency to quantum systems in pure quantum state, with conversion
of information from classical to quantum and vice versa, is unprecedented, with
major philosophical and scientific consequences. In the present approach free will
and consciousness go hand in hand, allowing a system to act based on its qualia
experience by converting quantum to classical information, and thus giving causal
power to subjectivity–something that until now has been highly controversial, if not
considered impossible.
The theory provides that a conscious agent may intentionally convert quantum
information into a specific classical information to express its free will, a classical
output that is in principle unpredictable due to its quantum origin. The theory would
be incoherent without the identification of the conscious system in terms of purity and
inseparability of the quantum state, which is identified with the systems experience.
The purity of non-deterministic quantum evolution identifies consciousness with
agency through its outcome.
Metaphysically the proposed interpretation that a pure, non-separable quantum
state is a state of consciousness, could be turned on its head by assuming the ontology of consciousness and agency as primary, whereas physics is emergent from consciousness and agency. This same interpretation would then consider classical physics the full reification (objectification) of quantum reality as quantum-toclassical agency corresponding to the free will of conscious entities existing entirely in the quantum realm. The ontology deriving by the acceptance of consciousness as fundamental, would be that objectivity and classical physics supervene on quantum physics, quantum physics supervenes on quantum information, and quantum information supervenes on consciousness. If we were to accept this speculative view, physics could then be understood as describing an open-ended future not yet existing because the free will choices of the conscious agents have yet to be made. In this perspective, we, as conscious beings, are the co-creators of our physical world. We do so individually and collectively, instant after instant and without realizing it, by our free-will choices.
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