#quantumfoundations
Awesome talk by Christopher Fuchs on the history of quantum mechanics here at the University of Ulm

#UUlm #QuantumInformation
#QuantumFoundations
July 14, 2025 at 2:23 PM
... and it is now published in Science Advances!

Title: Violation of Bell inequality with unentangled photons

www.science.org/doi/10.1126/...

#QuantumInformation #QuantumFoundations #BellInequalities
Violation of Bell inequality with unentangled photons
Violation of the Bell inequality can be achieved with quantum indistinguishability via path identity, instead of entanglement.
www.science.org
August 5, 2025 at 4:58 AM
Develops hierarchical view of physicality for quantum states, arguing that physical possibility admits degrees rather than binary classification, addressing foundational ambiguities in quantum mechanics and quantum field theory interpretations.

#QuantumFoundations #PhilosophyOfPhysics #Research
Physicality and Modality: Hierarchical Framework for Understanding Quantum States
arxiv.org
September 24, 2026 at 8:47 AM
We got lost in the measurement-problem literature—so we drew a map.

New review in Philos Mag: #decoherence + today’s main approaches, incl. many worlds, objective collapse, hidden variables & epistemic views—plus measurement in QFT.

doi.org/10.1080/1478...

#QuantumFoundations 🧪
December 26, 2025 at 2:52 PM
#philsky #introduction
I'm a philosopher interested in: #rorty #pragmatism #rhetoric #entropy #quantumfoundations #PhilosophyOfHope #abduction #imagination #metaphor #evolution #fruitfulness #diversity #pluralism #philsci #tiantai #buddhism
I'm working on creating a philosophy I call #fruitionism.
August 30, 2023 at 11:39 PM
arxiv.org/abs/2411.15964

This week #QuantumFoundations arXiv.

They introduce a theory, different than QT only by the tensor product rule.

They reproduce, e.g., all Bell correlations. I wonder what it may imply to Q Mereology or gaps between real and complex QT in Networks.

It was a nice read 🙂
November 27, 2024 at 9:43 AM
The idea that coherence and cause can emerge from within isn’t new to us.
We’ve modeled it. We’ve tested it.
This space continues to reflect why we started.

#QuantumFoundations #Emergence #Testable #NoAssumptions #FoundationsOfPhysics
July 30, 2025 at 11:46 AM
If an object is 30% present in state A and 70% in state B, this is not a statistical ensemble. It is a single, unified “Structural Object.” How does this change our understanding of quantum individuality?
#QuantumFoundations #PhilSky #philsci #DP ⚛️ 🧪
May 16, 2026 at 2:53 PM
New open-source Python package ConteXtuAlity enables faster analysis of contextuality in quantum systems using sheaf-theoretic methods. Optimized algorithms reduce computation times from hours to minutes for complex measurement scenarios.

#QuantumFoundations #OpenSourceQuantum #News
ConteXtuAlity: Open-Source Python Package for Computing Contextuality
quantumzeitgeist.com
September 25, 2026 at 7:08 PM
Experimental demonstration of quantum measure exceeding classical probability bound using photonic systems. Measured quantum measure μ(E)≈1.17, validating theory that quantum interference enables measures >1.

#QuantumFoundations #QuantumOpticsExperiment #News
Measuring a Quantum Measure Exceeding Unity
quantum-journal.org
September 24, 2026 at 9:43 AM
If you could run ONE simulation of the universe—no limits, no assumptions—what would it be?
Consciousness? Time? Pre-spacetime reality? Are observers inevitable or contingent?

#Physics #Consciousness #QuantumFoundations #Cosmology #Philosophy
December 31, 2025 at 5:51 AM
Quantum probability isn’t an epistemic flaw; it’s a structural feature of reality. DP I shows how a system’s state space distribution grounds the Born rule derivation and frames entanglement as non-factorizable presence fractions.
#QuantumFoundations #Physics
ijqf.org/archives/8001
May 15, 2026 at 3:05 PM
Mathematical framework derives the Born rule from a weak transition probability principle, simplifying quantum foundations without requiring additional postulates about observers. Connects quantum theory to statistical principles.

#QuantumFoundations #BornRule #Research
On the Born Rule in a New Quantum Approach
arxiv.org
September 22, 2026 at 7:41 AM
“We may be able to share quantum entanglement nearly infinitely.” New Scientist

If entanglement persists across many partners, maybe it’s not about connection.
Maybe it’s about conservation.

We’ve seen collapse mirrored. No signal.

It holds. 🧭

#QuantumFoundations #Testable #Entanglement
A pair of quantum experimenters that share two entangled particles may be able to pass some of that entanglement to indefinitely many other pairs, like tapping into a near-infinite “entanglement bank”.
We may be able to share quantum entanglement nearly infinitely
A pair of quantum experimenters that share two entangled particles may be able to pass some of that entanglement to other pairs – and keep sharing it again and again
www.newscientist.com
August 2, 2025 at 10:10 AM
Extended probability framework enables quantum systems to satisfy generalized Leggett-Garg and Bell-CHSH inequalities without violation, offering new perspective on reconciling quantum and classical properties through consistent history formalism.

#QuantumFoundations #QuantumMechanics #Research
Generalized Leggett-Garg and Bell-CHSH Inequalities with Extended Probability Framework
arxiv.org
September 22, 2026 at 8:12 AM
Standard quantum mechanics often blurs the line between the mathematics and the reality. What happens if we demand a strict ontological mapping for every formal element? The Distributed Presence (DP) framework attempts exactly this. #QuantumFoundations #PhilSci #DP
May 15, 2026 at 7:01 PM
Quantum probability appears classically identical in single measurements, but calibrated apparatus sweeps and global context consistency tests reveal nonclassicality. Farkas' lemma certifies when classical extensions fail for multi-context scenarios.

#quantumfoundations #contextuality #Research
Operational Shadows of Hilbert-Space Probabilities: Calibration and Context in Quantum Measurements
arxiv.org
July 13, 2026 at 3:52 AM
The pigeonhole experiment I worked on in @quantumaephraim.bsky.social 's lab has finally been published. We used variable strength measurements of non local observables to strengthen the case for weak values as elements of reality.
#quantumfoundations

www.pnas.org/doi/10.1073/...
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
www.pnas.org
February 17, 2025 at 4:22 PM
New paper: Born rule without probabilities?

What if outcome frequencies in quantum experiments arise from deterministic geometry?

zenodo.org/records/156042…#QuantumFoundationsn#BornRulel#Determinisms#PhilosophyOfPhysicscs
https://zenodo.org/records/156042…
June 6, 2025 at 8:30 PM
@seanmcarroll.bsky.social >> Sean, regarding the 'measurement problem': if the wavefunction collapse is just a local scalar stress transient in the E8 lattice (changing the local refractive index), does that preserve unitarity? #QuantumFoundations
December 11, 2025 at 4:15 PM
Abstract patterns aren’t “non-ontological.” In DP, presence structures exist as relational patterns. If a structure constrains reality (like PFi), it is fundamentally real. Ontology is defined by interactive patterns, not just material substance. #QuantumFoundations #DP
Aphorism: The Ontology of the Abstract, the Immaterial, and the Spaceless and Timeless

Absolutely nothing that can be categorized as "abstract", "immaterial", "spaceless", or "timeless" is, ultimately, non-ontological.

Everything ontological is a pattern that interacts.

#NPSPhilosophy
May 19, 2026 at 9:29 AM