#quantummechanics — Public Fediverse posts

Scientists Push Molecules on a Surface to the Ultimate Quantum Limit

Artistic representation of an optically excited molecule on a surface of a crystal. Credit: MPL, Alexey Shkarin An…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #MaxPlanckInstitute #QuantumMechanics #Quantumoptics #QuantumPhysics #Science #Spectroscopy
https://www.newsbeep.com/us/837601/

Scientists Push Molecules on a Surface to the Ultimate Quantum Limit

Artistic representation of an optically excited molecule on a surface of a crystal. Credit: MPL, Alexey Shkarin An…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #MaxPlanckInstitute #QuantumMechanics #Quantumoptics #QuantumPhysics #Science #Spectroscopy
https://www.newsbeep.com/us/837601/

Scientists Push Molecules on a Surface to the Ultimate Quantum Limit

Artistic representation of an optically excited molecule on a surface of a crystal. Credit: MPL, Alexey Shkarin An…
#NewsBeep #News #Physics #AU #Australia #MaxPlanckInstitute #QuantumMechanics #Quantumoptics #QuantumPhysics #Science #Spectroscopy
https://www.newsbeep.com/au/881216/

Scientists Push Molecules on a Surface to the Ultimate Quantum Limit

Artistic representation of an optically excited molecule on a surface of a crystal. Credit: MPL, Alexey Shkarin An…
#NewsBeep #News #Physics #AU #Australia #MaxPlanckInstitute #QuantumMechanics #Quantumoptics #QuantumPhysics #Science #Spectroscopy
https://www.newsbeep.com/au/881216/

https://www.europesays.com/uk/1188180/ Scientists Push Molecules on a Surface to the Ultimate Quantum Limit #MaxPlanckInstitute #Physics #QuantumMechanics #QuantumOptics #QuantumPhysics #Science #spectroscopy #UK #UnitedKingdom

Scientists Push Molecules on a Surface to the Ultimate Quantum Limit

Artistic representation of an optically excited molecule on a surface of a crystal. Credit: MPL, Alexey Shkarin An…
#NewsBeep #News #Physics #MaxPlanckInstitute #QuantumMechanics #Quantumoptics #QuantumPhysics #Science #spectroscopy #UK #UnitedKingdom
https://www.newsbeep.com/uk/760960/

https://www.europesays.com/ie/673787/ Scientists Push Molecules on a Surface to the Ultimate Quantum Limit #Éire #IE #Ireland #MaxPlanckInstitute #Physics #QuantumMechanics #QuantumOptics #QuantumPhysics #Science #Spectroscopy

RELATIVITY FASTER THAN LIGHT

FTL FROM REDUCING THE DOMAIN OF DEFINITION OF THE LORENTZ TRANSFORMATION

Abstract: Quantum Entanglement has been experimentally demonstrated with utmost certainty to go Faster Than Light. However, Special Relativity is conventionally said to exclude faster-than-light signaling because Lorentz transformations can reverse the temporal order of spacelike-separated events. We readjust Relativity to make it Entanglement compatible.

For an explicit FTL signal with (u=2c), a perfectly ordinary Lorentz transformation indeed assigns a negative reception time in a sufficiently rapidly moving inertial frame.
But this does not demonstrate that physical time travel occurs; it demonstrates that coordinate-time ordering is frame-dependent for spacelike intervals.

The essay argues that the real assumption requiring examination is not the mathematics of the Lorentz transformation, but its unrestricted physical interpretation.
If FTL influences exist, they need not be required to possess the same relativistic transformation properties as ordinary subluminal processes (and they should not as they potentially come from completely different physics)..

The proposed solution is to introduce a preferred Cosmic Manifest Frame (CMF), identified approximately by the Cosmological Microwave Background, CMB, in which FTL propagation and causal ordering are physically defined.
Other inertial frames may assign negative coordinate times to the same FTL process, but those coordinates do not represent reversed physical causality.
Lorentz symmetry is thereby retained as an effective symmetry for domains where it has been experimentally validated, and theoretically deduced, while it is denied fundamental universality.
SQPR adopts precisely such a preferred causal structure, with nonlocal quantum influences propagating at a finite superluminal speed such as TAU (>>>>> c).
The proposal thus attempts to separate the mathematical freedom of spacetime coordinates from the physical ordering of causes and effects.

***

We consider first a concrete numerical example of a specific superluminal speed to make the conventional argument found in Special Relativity textbooks (which we think is erroneous) completely explicit.

The standard argument against Faster Than Light SIGNALING goes as follows:

“Given Special Relativity, SR, if you allow faster‑than‑light signaling, then the Lorentz transformation between inertial frames implies that some observers will see the signal arrive before it is sent. With two such FTL signals, you can construct a closed causal loop, i.e. a form of ‘time travel’ that violates causality.” 

We will show that the “closed causal loop” construction is superfluous to make this (erroneous) argument work. The traditional argument can be made more compact, no need for a loop. This irony is significant, because the existence of a sharper (erroneous) argument against FTL from SR shows that the physicists who pretend to have demonstrated that FTL is impossible from SR have not bothered to find the sharpest argument, possibly indicating that they find the subject unappetizing… Or could it be that they were afraid to be cut by the sharpness of the argument, because, as it turns out, the argument doesn’t even need a causal loop? … It’s that basic…

First let’s give a concrete example. Let the Faster than Light (FTL) signal speed be u = 2c. And let the speed of S’ relative to S be .6c. And the separation L be two light second (twice Earth-Moon). Computation shows that, BLINDLY using the Lorentz transformation, the FTL signal is received in S’ at MINUS .25 second. In other words, time travel.

We argue that this is absurd, and caused by a misuse of the Lorentz transformation by overextending its domain of definition over the spacelike subset of Poincaré spacetime. (Poincaré discovered and used Poincaré spacetime and its metric months or years before those who plagiarized him. In particular Poincaré found the full Lorentz Transformation, LT, using the most general argument; this is important because, in spite of his success using it, clearly Poincaré took Poincaré spacetime with a grain of salt; the present essay explains a plausible reason why; there is another; later, following Poincaré once again, Einstein confessed he didn’t like Poincaré spacetime… Make no mistake: Poincaré’s argument about getting LT from Poincaré spacetime was entirely mathematically correct; what was not done is the physical restriction we undertake below).

Recapitulation in the general case: 

We set the frame S and S’ such that their space and time origin coincide x = x’ = t = t’ = 0. That’s event A. Event B is at (L,T) in S, such that L/T = u, superluminal: u > c.

What is the time of B in S’? T’(B) is: (T – v L/cc)γ 

If the signal is FTL, L> cTL. Then there exists some subluminal v high enough such that:

(T− vL/cc) < 0…. Thus t’(B) < 0.

In other words the FTL signal is received at a negative time in S’ … thus before it is sent. 

This is my sharper version of the erroneous argument many physicists have made against FTL.

***

GRAND RETURN OF ABSOLUTE SPACE:

Solution to the riddle of the Lorentz Transformation creating events which have not happened yet: Reject the claim that all inertial frames are equivalent  In other words, as observed in Physical Reality, I mean the cosmos out there, there is a preferred frame in the universe, the one in which the CMB is at rest. (Mach and Newton would opine that this absolute space gives us some hope of explaining inertia. Einstein developed General Relativity in the hope of explaining inertia… He completely failed in that hope, but then we got GPS from GR…)

So postulate a special frame in which FTL is defined and causality is enforced. This is the path of SQPR.

In other frames, you might get “backwards in time” coordinates, but you declare that only the preferred frame’s ordering is physically meaningful.

This does not even abandon standard Special Relativity formally, and certainly not in practice (all the usual formulas are still effective, say for GPS, but one cannot extend the domain of the Lorentz Transformation over the space-like domain). SR has no difficulty representing spacelike intervals. 

What we reject formally is the additional assumption that an FTL physical influence must transform exactly like an ordinary subluminal signal, with every inertial observer’s time coordinate having equal causal status. 

The Lorentz transformation is mathematically valid on spacetime, but its physical interpretation as a symmetry of every possible causal process need not be valid. Clearly when Poincaré published on June 5, 1905, the Lorentz Transformation as a rotation of Poincaré spacetime, he could not have guessed the EPR argument of 1935 of the demonstration of FTL by Aspect in 1982 (the latter proving that there are causal processes which are not confined by the speed of light; this outside of the domain of the Lorentz Transformation).

***

We can send (not yet controlled) information faster than light (Bell style experiments). Yes the orientation of the device at A has a real physical effect at B, even if the interval AB is spacelike. That has been amply proven theoretically and experimentally. 

We do not reject Poincaré spacetime… After all, it’s the geometrodynamics of light in the first approximation! But it’s just a first approximation; by the way, that seems to have been the point of view of his creator Henri Poincaré, that’s why he talked about the “ether” so much… Similarly Einstein admitted that, in General Relativity, the speed of light varies… The “ether” was a placeholder concept for the sort of hyperspace in which Physical Reality is embedded and that yours truly advocates for…

There are very deep math reasons for this; the math was not yet developed at the time but Poincaré, the world’s greatest topologist then, may have guessed them..

Instead we posit a preferred frame, the CMF, Cosmic Manifest Frame, as given by the CMB, the Cosmic Microwave Background. Call CMF by the letter S (for Stationary). 

• Causality is fundamentally defined.
• FTL influences propagate with some speed u>c. In the case of SQPR one cosmic quantum collapse/entanglement speed is hypothesized: TAU. 
• The Lorentz transformation is an effective symmetry only for certain classes of phenomena (e.g. electromagnetism), not a fundamental symmetry of all physics…. Just like light is not all of physics, and sure has little to say about the QUANTUM ENTANGLEMENT machinery it is subjected to (see Aspect Nobel Prize winning FTL experiments). 

This is exactly the loophole that avoids the “FTL ⇒ time travel” argument.

By the way, this restriction of the Lorentz Transformation proposed here will no doubt do wonders to help avoiding causal time like loops around Black Holes…

As we are into grandiose semi poetic evocations, let’s go all the way. I have an entanglement-clock argument: which questions the elevation of coordinate time to fundamental physical time. In the present essay, I similarly question the elevation of Lorentz-frame equivalence to a universal causal principle.

That gives the essay a much deeper unifying thesis: coordinate transformations need not dictate physical causality. (Ironically that idea is nothing new: it led to the creation of Special and General Relativity; what’s new is to push it beyond the old epistemological frontiers, taking FTL and Entanglement seriously…)

Patrice Ayme

COW DISTINGUISHES SQPR FROM PENROSE’s Gravitational Localization: 

COW Experiment Potentially DISTINGUISHES SQPR

In the 1970s I told Sir Roger Penrose (among others at Stanford) about the basic idea of SQPR. Penrose published in the 1980s the Gravitationally Induced Spontaneous Localization theory which applies the time-energy uncertainty (TEU) relation to spacetime.  The two Objective Reduction theories are very different, because they have different collapse mechanisms.

In particular at cosmological scale, SQPR predicts observed facts, such as Dark Matter and Dark Energy, whereas the Penrose theory does not.

The theories also make very different predictions in the lab relative to Quantum Mechanics, and also relative to each other.  Let’s explore. 

*** 

Diósi-Penrose Objective Reduction (DPOR) model is a hypothesis proposing that quantum wavefunctions collapse spontaneously due to gravitational instabilities caused by mass superposition. It has the advantage of tying in gravity and Quantum Mechanics (QM) in the simplest manner.

Core Concepts

• Gravity and Superposition: When a massive object exists in a superposition of two different locations, the distribution of its mass creates a simultaneous superposition of two distinct spacetime geometries. (At least that’s what the formalism of Quantum Mechanics predicts!) [1, 2]
• Spacetime Conflict: General relativity requires a single, well-defined spacetime metric, creating a fundamental clash with quantum superposition. [1]
• Objective Reduction: Rather than needing an external observer or measurement to trigger a collapse, gravity forces the system to resolve itself into a single state. [1, 2]
• Timescale: The lifetime of the superposition is inversely proportional to the gravitational self-energy difference between the states. The exact expression obtained by applying the TEU. The duration until collapse is inversely proportional to the difference in gravitational energy between the two different locations (and proportional to Planck constant, of course! It’s direct TEU!) 

***

In the Colella-Overhauser-Werner (COW) experiment, realized in 1975, thermal neutrons enter a silicon crystal Mach–Zehnder interferometer. When the interferometer is tilted by an angle theta relative to the horizontal, one arm (Path A) is at a higher gravitational potential than the lower arm (Path B).

It turns out that the energy of the quantum state in the upper branch, Path A, is different in composition from that of the lower branch, Path B. This can be physically demonstrated through the apparition of shifting interference fringes. The effect has been observed.

The reasoning is fascinating: one makes a number of assumptions, simplest and most natural. Those assumptions bring us to a shifting interference pattern shifting in a peculiar way, which is observed. Therefore one is entitled to deduce that the assumptions made were correct, and this tells us many things about matter waves.and in particular how long the guiding waves are. It may also enable to demonstrate in the lab the existence of Objective Reduction theories, which extend understanding beyond Quantum Mechanics.

***

Penrose’s Model Makes Experimental Predictions:

If one plugs the usual numbers in, considering self-gravitation of the neutron, one gets millions of years for Penrose collapse to happen. 

However for a single neutron interacting with Earth’s massive gravitational field, going both down a ground branch of the interferometer (B) and the elevated one (A), the difference in gravitational energy is mgh, where g is the usual gravitational acceleration at sea level, m is the mass of the neutron, and h is how high A is above B. 

If we extend the COW experiment using large molecules (like fullerenes or 10^4 atoms macromolecular clusters) or Bose–Einstein Condensates (BECs) instead of single neutrons, mgh scales up by 10^4 to $10^6. Then the collapse time drops precipitously from millions of years to milliseconds or microseconds—falling right inside the passage duration of the experiment! 

https://quantumnano.at/research/universal-matter-waves/why-matter-waves

***

Penrose does not suggest a plausible mechanism to cause collapse.

DPOR is a particular case of Objective Reduction (OR) models, where one does away with the silliness of an observer and “measurements”. 

The other model is SQPR, which ignores gravity, but not matter abundance and the QM state (for example Quantum amplitudes) it is in…

***. 

The SQPR Shift:

• If localization is independent of the background gravitational field g and depends instead on the density of surrounding matter fields (and the probability of guiding-wave truncation/shedding), then tilting the interferometer or placing it in a deep gravitational potential well will not alter the intrinsic collapse rate.
• An extended COW experiment conducted at sea level versus one conducted in microgravity (e.g., on the ISS) or on the Moon would yield the exact same decoherence rate in SQPR.
• Under Penrose, microgravity suppresses collapse; under SQPR, space microgravity leaves the collapse rate unchanged because matter-field interactions and guiding-wave limits remain invariant.

[Camping in Sierra Nevada; Post will be improved in future and computations made explicit…]

Patrice Ayme

Quantum Shuttle Mechanism Enhances Triplet Energy Transfer in Materials

📰 Original title: A strange quantum effect dramatically boosts energy transfer

🤖 IA: It's clickbait ⚠️
👥 Users: It's clickbait ⚠️

View full AI summary https://en.killbait.com/quantum-shuttle-mechanism-enhances-triplet-energy-transfer-in-materials.html?utm_source=mastodon_world&utm_medium=social&utm_campaign=killbait.mastodon_world

#science #quantummechanics #energytransfer #solarcells

Researchers at Aalto University have successfully built the world's first cyclic quantum heat engine inside a superconducting circuit, operating near absolute zero. The microscopic device harnesses the minuscule amount of heat present in ultracold quantum conditions to cyclically output positive work.
#QuantumMechanics #QuantumThermodynamics #Cryogenics (low-temperature physics) #AppliedPhysics #sflorg
https://www.sflorg.com/2026/07/qs07132601.html

~INTRODUCTION TO PHYSICS

https://beyondtheillusion97.wordpress.com/2026/05/29/introduction-to-physics/

Was #Feynman wrong about #QuantumMechanics? : Medium

What Will It Take to Get #AI Out of #Schools? : Misc

One #Vaccine may provide broad #Protection against many #Respiratory #Infections and #Allergens : Misc

Latest #KnowledgeLinks

https://knowledgezone.co.in/resources/bookmarks

⚛️🌌 Physical #teleportation requires reading the specific arrangement of atoms and sending that #data to a new location for reconstruction.

Because #quantum laws prevent the perfect copying of a state without destroying the source, the original subject wouldn't survive the scan. Scientists and philosophers debate whether a perfect duplicate would possess the same continuous #consciousness as the original person.

👉 https://www.thebrighterside.news/post/teleportation-is-possible-according-to-physics-but-would-you-survive/

#physics #quantummechanics #science #philosophy #research #nature

📉 Oh, the "physics of sales"—because nothing says cutting-edge business strategy like a desperate attempt to make selling sound as mysterious and scientific as quantum mechanics. 🙄 Spoiler alert: if your sales calls resemble a black hole of awkwardness, no amount of "product-market fit" babble is going to save you. 🚀
https://howtogrow.substack.com/p/the-physics-of-sales #physicsOfSales #salesStrategy #businessHumor #quantumMechanics #salesCalls #HackerNews #ngated

⚛️ Duality in Physics: A Mind-Bending Concept

Wave or particle? Matter or energy? In quantum mechanics, duality challenges our classical intuition and reshapes how we see reality. 🌌

From light to electrons, this phenomenon is at the core of modern physics. Curious to learn more? Watch this video! 🎥

🔗 https://youtu.be/L9ub_B71U0E?si=p-mJf5bcXnLjpCP1

#Physics #QuantumMechanics #WaveParticleDuality #Science

⚛️ Duality in Physics: A Mind-Bending Concept

Wave or particle? Matter or energy? In quantum mechanics, duality challenges our classical intuition and reshapes how we see reality. 🌌

From light to electrons, this phenomenon is at the core of modern physics. Curious to learn more? Watch this video! 🎥

🔗 https://youtu.be/L9ub_B71U0E?si=p-mJf5bcXnLjpCP1

#Physics #QuantumMechanics #WaveParticleDuality #Science

⚛️ Duality in Physics: A Mind-Bending Concept

Wave or particle? Matter or energy? In quantum mechanics, duality challenges our classical intuition and reshapes how we see reality. 🌌

From light to electrons, this phenomenon is at the core of modern physics. Curious to learn more? Watch this video! 🎥

🔗 https://youtu.be/L9ub_B71U0E?si=p-mJf5bcXnLjpCP1

#Physics #QuantumMechanics #WaveParticleDuality #Science

⚛️ Duality in Physics: A Mind-Bending Concept

Wave or particle? Matter or energy? In quantum mechanics, duality challenges our classical intuition and reshapes how we see reality. 🌌

From light to electrons, this phenomenon is at the core of modern physics. Curious to learn more? Watch this video! 🎥

🔗 https://youtu.be/L9ub_B71U0E?si=p-mJf5bcXnLjpCP1

#Physics #QuantumMechanics #WaveParticleDuality #Science

"Is Time Travel, Especially Into the Past, Possible?"
#experimental #astroparticle #physicist Matt Szydagis speaking at #TEDx #Schenectady #NY #US

Discussing a range of possibilities & problems of #TimeTravel, emphasizing the #paradoxes, #Einstein, and #quantummechanics. No mention of #entanglement. Agrees that our understanding should include #subatomic particles as #message carriers.

🔗 https://youtube.com/watch?v=m2-I5HUwfRg 16 Jan 2018

#Time #Timelessness #TimeTravelThinkers

Daniel and Jorge talk about super complex numbers and how they might hold the secrets of the Universe..

What are octonions?

#Algebra #complexNumbers #DanielAndJorgeExplainTheUniverse #Geometry #Math #Mathematics #octonions #Physics #podcast #podcasts #Quantum #QuantumMechanics #QuantumPhysics #science #SpecialRelativity

“We Are Not Empty”, Aeon (https://aeon.co/essays/why-the-empty-atom-picture-misunderstands-quantum-theory).

#Matter #Atoms #Nucleus #Neutrons #Protons #Electrons #Science #Physics #QuantumTheory #QuantumMechanics

#GregoryBenford - What's Real About #Time?

https://www.youtube.com/watch?v=sJ7UzrrJkMg&ab_channel=CloserToTruth

#Philosophy #PhilosophyOfScience #PhilosophyOfTime #NatureOfTime #TimeTravel #Paradox #Paradoxes #Causality #Information #QM #QuantumMechanics #QuantumPhysics #Metaphysics #Multiverse #CloserToTruth #RobertKuhn