Weekly Papers on Quantum Foundations (41)

Experimental evidence for the Unruh effect. (arXiv:1903.00043v3 [gr-qc] UPDATED) 2019年10月18日 星期五 下午7:34 | gr-qc updates on arXiv.org Authors: Morgan H. Lynch, Eliahu Cohen, Yaron Hadad, Ido Kaminer We examine the radiation emitted by high energy positrons channeled into silicon crystal samples. The positrons are modeled as semiclassical vector currents coupled to an Unruh-DeWitt detector to incorporate any local change in the energy of the… Read more →

Weekly Papers on Quantum Foundations (40)

MOND vs. dark matter in light of historical parallels. (arXiv:1910.04368v1 [astro-ph.GA]) 2019年10月11日 星期五 下午8:32 | physics.hist-ph updates on arXiv.org Authors: Mordehai Milgrom MOND is a paradigm that contends to account for the mass discrepancies in the Universe without invoking `dark’ components, such as `dark matter’ and `dark energy’. It does so by supplanting Newtonian dynamics and General Relativity, departing from them… Read more →

Weekly Papers on Quantum Foundations (39)

An Entropic Dynamics Approach to Geometrodynamics. (arXiv:1910.01188v1 [gr-qc]) 下午12:34 | quant-ph updates on arXiv.org Authors: Selman Ipek, Ariel Caticha In the Entropic Dynamics (ED) framework quantum theory is derived as an application of entropic methods of inference. The physics is introduced through appropriate choices of variables and of constraints that codify the relevant physical information. In previous work, a manifestly covariant ED… Read more →

Weekly Papers on Quantum Foundations (38)

Generalised Reichenbachian common cause systems 上午8:00 | Latest Results for Synthese Abstract The principle of the common cause claims that if an improbable coincidence has occurred, there must exist a common cause. This is generally taken to mean that positive correlations between non-causally related events should disappear when conditioning on the action of some underlying common cause. The extended interpretation… Read more →

Weekly Papers on Quantum Foundations (37)

When is a set of questions to nature together with sharp answers to those questions in one-to-one correspondence with a set of quantum states?. (arXiv:1909.08834v1 [quant-ph]) 上午9:10 | quant-ph updates on arXiv.org Authors: Inge S. Helland A general question is posed to the quantum community. Partial results are formulated in a self-contained way. In particular, the title question is answered affirmatorily… Read more →

Weekly Papers on Quantum Foundations (36)

Classical causal models cannot faithfully explain Bell nonlocality or Kochen-Specker contextuality in arbitrary scenarios. (arXiv:1909.05434v1 [quant-ph]) 下午12:56 | quant-ph updates on arXiv.org Authors: J. C. Pearl, E. G. Cavalcanti In a recent work, it was shown by one of us (EGC) that Bell-Kochen-Specker inequality violations in phenomena satisfying the no-disturbance condition (a generalisation of the no-signalling condition) cannot in general be explained… Read more →

Weekly Papers on Quantum Foundations (35)

Proposal for a new quantum theory of gravity IV: Black hole entropy from non-commutative geometry and spontaneous localisation. (arXiv:1909.02434v1 [gr-qc]) 下午12:42 | quant-ph updates on arXiv.org Authors: Palemkota Maithresh, Tejinder P. Singh In our recently proposed theory of quantum gravity, a black hole arises from the spontaneous localisation of an entangled state of a large number of atoms of space-time-matter [STM]. Prior… Read more →

Weekly Papers on Quantum Foundations (34)

The Frustration of being Odd: How Boundary Conditions can destroy Local Order. (arXiv:1908.10876v1 [cond-mat.stat-mech]) 上午10:25 | quant-ph updates on arXiv.org Authors: Vanja Marić, Salvatore Marco Giampaolo, Domagoj Kuić, Fabio Franchini A central tenant in the classification of phases is that boundary conditions cannot affect the bulk properties of a system. In this work we show striking, yet puzzling, evidence of a clear violation of… Read more →

Weekly Papers on Quantum Foundations (33)

Weak Gravitational Field Effects on Optical Bell Tests. (arXiv:1908.08179v1 [quant-ph]) 下午12:23 | quant-ph updates on arXiv.org Authors: M. Rivera-Tapia, A. Delgado, G. F. Rubilar The technological refinement of experimental techniques has recently allowed the generation of two-photon polarization entangled states at low Earth orbit, which have been subsequently applied to quantum communications. This achievement paves the way to study the interplay between General… Read more →

Weekly Papers on Quantum Foundations (32)

Critical look at the time-energy uncertainty relations. (arXiv:1908.05273v1 [quant-ph]) 上午9:48 | quant-ph updates on arXiv.org Authors: K. Urbanowski The Heisenberg and Mandelstam-Tamm time-energy uncertainty relations are analyzed. The conlusion resulting from this analysis is that within the Quantum Mechanics of Schr\”{o}dinger and von Neumann, the status of these relations can not be considered as the same as the status of the… Read more →

Weekly Papers on Quantum Foundations (31)

Do the EPR correlations pose a problem for causal decision theory? 上午8:00 | Latest Results for Synthese Abstract We argue that causal decision theory (CDT) is no worse off than evidential decision theory (EDT) in handling entanglement, regardless of one’s preferred interpretation of quantum mechanics. In recent works, Ahmed (Evidence, decision, and causality, Cambridge University Press, Cambridge, 2014) and Ahmed and… Read more →