What Represents Space-time? And What Follows for Substantivalism \emph{vs.} Relationalism and Gravitational Energy?. (arXiv:2208.05946v1 [physics.hist-ph]) 上午9:40 | physics.hist-ph updates on arXiv.org Authors: J. Brian Pitts The questions of what represents space-time in GR, the status of gravitational energy, the substantivalist-relationalist issue, and the (non)exceptional status of gravity are interrelated. If space-time has energy-momentum, then space-time is substantival. Two extant ways to… Read more →

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 →

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 →

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 →

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 →

Scientific Understanding in the Aharonov-Bohm Effect 上午2:57 | Philsci-Archive: No conditions. Results ordered -Date Deposited. Shech, Elay (2022) Scientific Understanding in the Aharonov-Bohm Effect. [Preprint] Nature abhors redundancies: A no-go result for density matrix realism 上午2:55 | Philsci-Archive: No conditions. Results ordered -Date Deposited. Gao, Shan (2022) Nature abhors redundancies: A no-go result for density matrix realism. [Preprint] Demonstrating quantum… Read more →