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Weekly Papers on Quantum Foundations (32)

Fundamental Limitation on the Detectability of Entanglement. (arXiv:2208.02518v1 [quant-ph]) 上午10:42 | Pengyu Liu, Zhenhuan Liu, Shu Chen, Xiongfeng Ma | quant-ph updates on arXiv.org Entanglement detection is essential in quantum information science and quantum many-body physics. It has been proved that entanglement exists almost surely for a random quantum state, while the realizations of effective entanglement criteria usually consume exponential… Read more →

Weekly Papers on Quantum Foundations (31)

Time-energy uncertainty relation for noisy quantum metrology. (arXiv:2207.13707v1 [quant-ph]) 上午9:19 | Philippe Faist, Mischa P. Woods, Victor V. Albert, Joseph M. Renes, Jens Eisert, John Preskill | quant-ph updates on arXiv.org Detection of weak forces and precise measurement of time are two of the many applications of quantum metrology to science and technology. We consider a quantum system initialized in… Read more →

Weekly Papers on Quantum Foundations (30)

How to Explain the Direction of Time 上午10:34 | Philsci-Archive: No conditions. Results ordered -Date Deposited. Fernandes, Alison (2022) How to Explain the Direction of Time. [Preprint] Homodyne measurement with a Schr\”odinger cat state as a local oscillator. (arXiv:2207.10210v1 [quant-ph]) 上午8:55 | Joshua Combes, Austin P. Lund | quant-ph updates on arXiv.org Homodyne measurements are a widely used quantum measurement…. Read more →

Weekly Papers on Quantum Foundations (29)

Gomes, Henrique and Butterfield, Jeremy (2022) How to Choose a Gauge? The case of Hamiltonian Electromagnetism.  Gao, Shan (2022) If the global phase is real. [Preprint] An Armstrongian Defense of Dispositional Monist Accounts of Laws of Nature 上午1:13 | Philsci-Archive: No conditions. Results ordered -Date Deposited. Mohammadian, Mousa (2022) An Armstrongian Defense of Dispositional Monist Accounts of Laws of Nature. [Preprint] A reductive account of “before”: deriving… Read more →

Weekly Papers on Quantum Foundations (28)

Gravity entanglement, quantum reference systems, degrees of freedom. (arXiv:2207.03138v1 [quant-ph]) 上午9:51 | Marios Christodoulou, Andrea Di Biagio, Richard Howl, Carlo Rovelli | quant-ph updates on arXiv.org We discuss the physical interpretation of the gravity mediated entanglement effect. We show how to read it in terms of quantum reference systems. We pinpoint the single gravitational degree of freedom mediating the entanglement…. Read more →

If the global phase is real

The ontological meaning of the wave function has been debated for many years. A widely-discussed view is wave function realism, according to which the wave function represents a real physical field in a fundamental high-dimensional space. In this paper, I argue that wave function realism is inconsistent with the reality of the global phase. In other words, the global phase… Read more →

Weekly Papers on Quantum Foundations (27)

Reply to the comment on “Quantum priniple of relativity”. (arXiv:2206.15247v1 [quant-ph]) 上午9:48 | Andrzej Dragan, Artur Ekert | quant-ph updates on arXiv.org We refute criticisms by Del Santo and Horvat towards our paper “Quantum principle of relativity”: most of their counterarguments can be dismissed, and the rest provides further evidence to our claims. Stochastic Bohmian and Scaled Trajectories. (arXiv:2206.15260v1 [quant-ph])… Read more →

Weekly Papers on Quantum Foundations (26)

Gao, Shan (2022) On Bell’s Everett (?) theory. [Preprint] Earman, John (2022) Trace-Free Gravitational Theory (aka Unimodular Gravity) for Philosophers. [Preprint] Chen, Eddy Keming and Goldstein, Sheldon (2022) Governing Without A Fundamental Direction of Time: Minimal Primitivism about Laws of Nature. Ben-Menahem, Y. (eds.). Rethinking the Concept of Law of Nature. pp. 21-64. Baker, David John (2022) The Epiphenomena Argument for Symmetry-to-Reality Inference. In: UNSPECIFIED. Generalized Gleason theorem and finite amount of information for… Read more →

Weekly Papers on Quantum Foundations (25)

A note on the inner products of pure states and their antidistinguishability. (arXiv:2206.08313v1 [quant-ph]) 上午11:01 | Vincent Russo, Jamie Sikora | quant-ph updates on arXiv.org A set of d quantum states is said to be antidistinguishable if there exists a d-outcome POVM that can perfectly identify which state was not measured. A conjecture by Havl\’i\v{c}ek and Barrett states that if… Read more →

Weekly Papers on Quantum Foundations (24)

Causality, unitarity and stability in quantum gravity: a non-perturbative perspective. (arXiv:2206.04072v1 [hep-th]) 上午9:50 | gr-qc updates on arXiv.org Authors: Alessia Platania Resumming quantum fluctuations at the level of the gravitational path integral is expected to result in non-local effective actions and thus in a non-trivial momentum dependence of the propagator. Which properties the (dressed) graviton propagator has to satisfy and whether… Read more →

Weekly Papers on Quantum Foundations (23)

The Pragmatic QFT Measurement Problem and the need for a Heisenberg-like Cut in QFT 2022年6月3日 星期五 上午3:37 | Philsci-Archive: No conditions. Results ordered -Date Deposited. Grimmer, Daniel (2022) The Pragmatic QFT Measurement Problem and the need for a Heisenberg-like Cut in QFT. [Preprint] Existence of superluminal signaling in collapse theories of quantum mechanics 2022年6月3日 星期五 上午3:36 | Philsci-Archive: No conditions…. Read more →