#quantummechanics — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #quantummechanics, aggregated by home.social.
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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
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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/ -
АНТРОПОЛОГИЯ, ANTHROPOLOGY, АНТРОПОЛОГІЯ
#АНТРОПОЛОГИЯ, #ANTHROPOLOGY, #АНТРОПОЛОГІЯ
t.me/scilib_yura15cbx/542Thermodynamics, statistical physics
Термодинамика, статистическая физика
Термодинаміка, статистична фізика
#Thermodynamics, #statistical physics
#Термодинамика, #статистическаяфизика
#Термодинаміка, #статистичнафізика
t.me/scilib_yura15cbx/541PQm Quantum mechanics
Квантовая механика
Квантова механіка
#Quantum mechanics
#Квантоваямеханика
#Квантовамеханіка
t.me/scilib_yura15cbx/540PQft Quantum field theory
Квантовая теория поля
Квантова теорія поля
#Quantum field theory
t.me/scilib_yura15cbx/539Фазовые переходы
Phase_transitions, Фазовіпереходи
#Фазовые переходы
#Phase transitions, #Фазовіпереходи
t.me/scilib_yura15cbx/538Пиротехника, Піротехніка, Pyrotechnics
#Пиротехника, #Піротехніка, #Pyrotechnics
t.me/scilib_yura15cbx/537Астрономия, Астрономія, Astronomy
#Астрономия, #Астрономія, #Astronomy
t.me/scilib_yura15cbx/536PPop Popular-level
Популярная физика
Популярна Фізика
t.me/scilib_yura15cbx/535PG General courses
Общие курсы
Загальні курси
t.me/scilib_yura15cbx/534PPl Plasma Плазма
Физика плазмы
#Plasma #Плазма
#Физика плазмы
t.me/scilib_yura15cbx/533PPh Philosophy of Physics
Философия физики,
Філософія фізики
t.me/scilib_yura15cbx/532POs Oscillations and waves
Колебания и волны
Коливання і хвилі
t.me/scilib_yura15cbx/531PNu Nuclear Physics
Ядерна фізика
Ядерная физика
#Nuclear Physics
#Ядернафізика
#Ядернаяфизика
t.me/scilib_yura15cbx/530PNc Nonlinear chaos
Нелинейный хаос
Нелінійний хаос
#Nonlinear chaos
#Нелинейныйхаос
#Нелінійнийхаос
t.me/scilib_yura15cbx/529PM Atomic Molecular and Optical Physics
Атомна молекулярна та оптична Фізика
Атомная молекулярная и оптическая физика
t.me/scilib_yura15cbx/528PGrc Cosmology
Космология
Космологія
#Cosmology
#Космология
#Космологія
t.me/scilib_yura15cbx/527PGr Gravitation
Гравитация
Гравітація
#Gravitation
#Гравитация
#Гравітація
t.me/scilib_yura15cbx/526PGe Encyclopaediae physics
Енциклопедія
Энциклопедии
t.me/scilib_yura15cbx/525PE Electromagnetism
Електромагнетизм
Электромагнетизм
#Electromagnetism
#Електромагнетизм
#Электромагнетизм
t.me/scilib_yura15cbx/523PD Dynamical systems
Динамические системы
Динамічна система
t.me/scilib_yura15cbx/522PCh Chemical physics
Хімічна фізика
Химическая физика
#Chemical physics
#Хімічнафізика
#Химическаяфизика
t.me/scilib_yura15cbx/521PCtm Theoretical mechanics
Теоретическая механика
Теоретична механіка
t.me/scilib_yura15cbx/520PCstr Special relativity
Спеціальна теорія відносності
Специальная теория относительности
t.me/scilib_yura15cbx/519PCft Classical fields
Классические поля, классическая теория поля, класична теорія поля
t.me/scilib_yura15cbx/518 -
Scientific Explanations For Deja Vu And The Paranormal
Most of us at some point in our lives have experienced Deja vu, that is we feel as though an experience we’re having or seeing has happened before. Most of us have also had the experience of seeing something out of the corner of our eye, or the sensation of having chills for no known reason. Some people also report that they’ve seen ghosts, spirits or aliens. Some of these phenomena such as ghosts or spirits are quite often associated with people who have passed away, sometimes in […]https://johnbronze.wordpress.com/2026/07/30/scientific-explanations-for-deja-vu-and-the-paranormal/
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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.
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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!)
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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.
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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
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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
#Consciousness #COWExperiment #Founndations #Interferometry #Localization #Neutrons #Penrrose #Philosophy #Physics #QuantumMechanics #Science #SQPR -
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
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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
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⚛️ #QuantumPhysics – Why we just can't seem to understand it!🤔
In the #Zoomposium with #GerdGanteför, we’ll be discussing precisely this fascinating boundary between #Mathematics, #Physics, and #Metaphysics.
📎 https://philosophies.de/index.php/2023/04/16/zoomposium-gerd-gantefoer/
📺 https://youtu.be/V4pUEEtFCUo
#Reality #BoundariesOfPhysics #QuantumMechanics #Science #NaturalScience #Philosophy #ScienceAndPhilosophy #QuantumInformation #ParticlePhysics #BoundariesOfKnowledge #PhysicsAndPhilosophy #MetaphysicsOfPhysics
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Physicists have measured ‘negative time’ in the lab
#QuantumPhysics #Science #Physics #QuantumResearch #Tech #Photon #Time #Research #Innovation #Optics #QuantumMechanics #ScientificDiscovery #LabExperiment #Atoms #PhysicsNews #FutureTech #NegativeTime
https://the-14.com/physicists-have-measured-negative-time-in-the-lab/ -
Bouncing on a Wave
On a vibrating fluid, droplets can bounce and interact in complex ways. Here, researchers demonstrate some of the peculiar dynamics of these wave-guided droplets, showing how they can do things like pair up in waltzes. To keep the droplets from coalescing with one another, they perform their experiments in a pressurized chamber; the higher air pressure makes it harder for the air film between droplets to drain during a collision, making the droplets unable to coalesce. Under these conditions, the authors show that the droplet-wave system has quantum-like statistics. (Video and image credit: J. Clampett et al.)
#2025gofm #bouncingDroplets #coalescence #droplets #flowVisualization #fluidDynamics #hydrodynamicQuantumAnalogs #physics #pilotWaveHydrodynamics #quantumMechanics #science #vibration -
Physics Expert (PhD)
MercorSee the full job description on jobRxiv: https://jobrxiv.org/job/mercor-27779-physics-expert-phd/
#classicalmechanics #quantummechanics #statisticalphysics #thermodynamics #ScienceJobs #hiring #research
https://jobrxiv.org/job/mercor-27779-physics-expert-phd/?fsp_sid=2559 -
📉 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 -
Physics Expert (PhD)
MercorSee the full job description on jobRxiv: https://jobrxiv.org/job/mercor-27779-physics-expert-phd/
#classicalmechanics #quantummechanics #statisticalphysics #thermodynamics #ScienceJobs #hiring #research
https://jobrxiv.org/job/mercor-27779-physics-expert-phd/?fsp_sid=1516 -
Physics Expert (PhD)
MercorSee the full job description on jobRxiv: https://jobrxiv.org/job/mercor-27779-physics-expert-phd/
#classicalmechanics #quantummechanics #statisticalphysics #thermodynamics #ScienceJobs #hiring #research
https://jobrxiv.org/job/mercor-27779-physics-expert-phd/?fsp_sid=1376 -
Quantum Decoherence
#astrophysicist Matt O'Dowd: How Decoherence Splits the #Quantum #Multiverse. 15-min.🔗 https://www.youtube.com/watch?v=GlOwJWJWPUs 2020 Feb 24
🔗 https://Wikipedia.org/wiki/Quantum_decoherence … #Decoherence
🔗 https://Wikipedia.org/wiki/Coherence_(physics)#Quantum_coherence … #Coherence
🔗 https://Wikipedia.org/wiki/Quantum_mechanics … #QuantumMechanics
🔗 https://Wikipedia.org/wiki/Matt_O%27Dowd_(astrophysicist) … #MattODowd
🎓 h/t @carton383 -
1930-2014: Quasiparticles have continued to be discovered since 1930: magnon, exciton, phonon, etc. #Poetry #Science #History #QuantumMechanics #Quasiparticles (https://sharpgiving.com/thebookofscience/items/p1930c.html)
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Quasiparticles called merons appear in a synthetic antiferromagnet for the first time
Collective topological chiral spin textures could lead to new concepts for spintronics devices
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How the #Higgs Mechanism Gives Things #Mass
https://www.youtube.com/watch?v=G0Q4UAiKacw&ab_channel=PBSSpaceTime
#PBS #SpaceTime #PBSSpaceTime #HiggsBoson #Boson #HiggsMechanism #HiggsField #Symmetry #U1 #SU2 #BrokenSymmetry #GaugeField #GaugeBoson #GoldstoneBoson #QM #QuantumMechanics #QuantumPhysics #Phase #Lagrangian #MattODowd
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#RobertLaughlin - What's #Fundamental in the #Cosmos?
https://www.youtube.com/watch?v=7Jya_lmQuvw&ab_channel=CloserToTruth
#Philosophy #PhilosophyOfScience #PhilosophyOfCosmology #Science #Cosmology #Metaphysics #Einstein #GR #GeneralRelativity #SpecialRelativity #EquivalencePrinciple #Gravity #BlackHoles #CosmologicalPrinciple #Spacetime #Time #Space #Emergence #QM #QuantumMechanics #CloserToTruth #RobertKuhn
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Spooky Action at a Distance (#BellsInequality) - #SixtySymbols
https://www.youtube.com/watch?v=0RiAxvb_qI4&ab_channel=SixtySymbols
#Philosophy #PhilosophyOfScience #PhilosophyOfPhysics #Physics #QM #QuantumMechanics #QuantumPhysics #Entanglement #HiddenVariables #Locality #NonLocality #Einstein #Podolsky #Rosen #BradyHaran #MikeMerrifield #ProfMikeMerrifield #ProfessorMikeMerrifield #UniversityOfNottingham #NottinghamUniversity
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#BenMiles - Can #Tomorrow Change #Yesterday?
https://www.youtube.com/watch?v=WugRN6xe9XQ&ab_channel=DrBenMiles
#DrBenMiles #Science #Physics #PhilosophyOfScience #Philosophy #PhilosophyOfCosmology #Cosmology #Time #LocalRealism #Realism #Locality #NonLocality #Causation #RetroCausation #Entanglement #QuantumPhysics #QuantumMechanics #QM #GeneralRelativity #GR #TimeTravel
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What Is #Time ? - #Professor #SeanCarroll Explains #Presentism and #Eternalism
https://www.youtube.com/watch?v=MAScJvxCy2Y&ab_channel=Wondrium
#Philosophy #PhilosophyOfScience #PhilosophyOfPhysics #Science #Physics #Cosmology #SpaceTime #Entropy #Memory #BlockUniverse #TheBlockUniverse #GeneralRelativity #Relativity #QM #QuantumMechanics #QuantumPhysics
