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PhilSci-Archive: No conditions. Results ordered -Date Deposited.
Sat May 27 2023 07:52:15 (1 hour)
# 1.
Gábor, Hofer-Szabó (2023) Sequential measurements and the Kochen-Specker arguments. [Preprint]
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PhilSci-Archive: No conditions. Results ordered -Date Deposited.
Sat May 27 2023 07:49:13 (1 hour)
# 2.
Gomori, Marton and Hoefer, Carl (2023) Classicality and Bell’s Theorem. [Preprint]
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physics.hist-ph updates on arXiv.org
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Inge S. Helland
Fri May 26 2023 09:19:34 (1 day)
# 3.
An alternative approach towards quantum theory is described, and tentative attempts to connect his approach to special and general relativity are discussed. Important concepts ar gauge groups and information/entropy connected to some physical systems. Some recent results on information in connection to black holes are touched upon. The discussions here must be considered to be preliminary.
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Nemanja Kaloper
Fri May 26 2023 09:19:32 (1 day)
# 4.
We point out that time’s arrow is generated by quantum mechanical evolution, whenever the systems have a very large number ${\cal N}$ of non-degenerate states and a Hamiltonian bounded from below. When ${\cal N}$ is finite, the arrow can be imperfect, since evolution can resurrect past states. In the limit ${\cal N} \rightarrow \infty$ the arrow is fixed by the “tooth of time”: the decay of excited states induced by {\it spontaneous emission} to the ground state, mediated by interactions and a large number of decay products which carry energy and information to infinity.
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physics.hist-ph updates on arXiv.org
by
Federico Laudisa
Fri May 26 2023 09:19:31 (1 day)
# 5.
John S. Bell introduced the notion of beable, as opposed to the standard notion of observable, in order to emphasize the need for an unambiguous formulation of quantum mechanics. In the paper I show that Bell formulated in fact two different theories of beables. The first is somehow reminiscent of the Bohr views on quantum mechanics but, at the same time, is curiously adopted by Bell as a critical tool against the Copenhagen interpretation, whereas the second, more mature formulation was among the sources of inspiration of the so-called Primitive Ontology (PO) approach to quantum mechanics, an approach inspired to scientific realism. In the first part of the paper it is argued that, contrary to the Bell wishes, the first formulation of the theory fails to be an effective recipe for addressing the ambiguity underlying the standard formulation of quantum mechanics, whereas it is only the second formulation that successfully paves the way to the PO approach. In the second part, I consider how the distinction between the two formulations of the Bell theory of beables fares vis-a-vis the complex relationship between the theory of beables and the details of the PO approach.
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Twesh Upadhyaya, William F. Braasch, Jr., Gabriel T. Landi, Nicole Yunger Halpern
Fri May 26 2023 09:19:29 (1 day)
# 6.
We extend entropy production to a deeply quantum regime involving noncommuting conserved quantities. Consider a unitary transporting conserved quantities (“charges”) between two systems initialized in thermal states. Three common formulae model the entropy produced. They respectively cast entropy as an extensive thermodynamic variable, as an information-theoretic uncertainty measure, and as a quantifier of irreversibility. Often, the charges are assumed to commute with each other (e.g., energy and particle number). Yet quantum charges can fail to commute. Noncommutation invites generalizations, which we posit and justify, of the three formulae. Charges’ noncommutation, we find, breaks the formulae’s equivalence. Furthermore, different formulae quantify different physical effects of charges’ noncommutation on entropy production. For instance, entropy production can signal contextuality – true nonclassicality – by becoming nonreal. This work opens up stochastic thermodynamics to noncommuting – and so particularly quantum – charges.
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Veronika Baumann, Caslav Brukner
Fri May 26 2023 09:19:27 (1 day)
# 7.
The Wigner’s friend experiment is a thought experiment in which a so-called superobserver (Wigner) observes another observer (the friend) who has performed a quantum measurement on a physical system. In this setup Wigner treats the friend the system and potentially other degrees of freedom involved in the friend’s measurement as one joint quantum system. In general, Wigner’s measurement changes the internal record of the friend’s measurement result such that after the measurement by the superobserver the result stored in the observer’s memory register is no longer the same as the result the friend obtained at her measurement, i.e. before she was measured by Wigner. Here, we show that any awareness by the friend of such a change, which can be modeled by an additional memory register storing the information about the change, conflicts with the no-signaling condition in extended Wigner-friend scenarios.
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Masashi Wakamatsu
Fri May 26 2023 09:19:20 (1 day)
# 8.
It is widely accepted that the Aharonov-Bohm (AB) effect is understood as local action of the vector potential generated by the solenoid on the complex phase of a charged particle’s wave functions. Nevertheless, because the vector potential is a gauge-dependent quantity, there still exist not a few researchers who claim that the AB-effect is caused by nonlocal action of the magnetic field confined inside the solenoid. A serious drawback of such non-locality explanation is that it is hard to offer definite mechanism of such nonlocal interaction between separated charge and magnetic field. This is not surprising, since the locality is the foundation of modern physics including electromagnetism and quantum mechanics. On the other hand, there recently appear some interesting attempts to explain the AB-effect through the interaction between the charged particle and the solenoid current mediated by the exchange of a virtual photon. A vital assumption of this approach is that AB-phase shift is proportional to the change of the interaction energy between the charged particle and solenoid along the path of the moving charge. Accordingly, they insist that the AB-phase change along a path does not depend on the gauge choice so that the AB-phase shift for a non-closed path is in principle measurable. In the present paper, we critically examine this astonishing conclusion with the utmost care and attention. At the same time, we try to give refreshed insight into the role of the vector potential in the interpretation of the AB-effect.
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PhilSci-Archive: No conditions. Results ordered -Date Deposited.
Thu May 25 2023 07:41:48 (2 days)
# 9.
Emily, Adlam (2022) The Temporal Asymmetry of Influence is not Statistical. [Preprint]
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Thu May 25 2023 00:23:09 (2 days)
# 10.
Bennett, Marissa and Miller, Michael (2023) The conventionality of real valued quantities. In: UNSPECIFIED.
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Wed May 24 2023 00:28:45 (3 days)
# 11.
Adlam, Emily (2023) Disappearing Without a Trace: The Arrows of Time in Kent’s Solution to the Lorentzian Quantum Reality Problem. [Preprint]
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Tue May 23 2023 03:44:13 (4 days)
# 12.
Ruyant, Quentin (2021) Symmetries, Indexicality and the Perspectivist Stance. International Studies in the Philosophy of Science, 34 (1). pp. 21-39. ISSN 0269-8595
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Tue May 23 2023 03:43:31 (4 days)
# 13.
Weinberger, Naftali and Williams, Porter and Woodward, James (2023) The Worldly Infrastructure of Causation. [Preprint]
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PRL: General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.
by
Dominik Šafránek, Dario Rosa, and Felix C. Binder
Mon May 22 2023 18:00:00 (4 days)
# 14.
Author(s): Dominik Šafránek, Dario Rosa, and Felix C. Binder
Energy extraction is a central task in thermodynamics. In quantum physics, ergotropy measures the amount of work extractable under cyclic Hamiltonian control. As its full extraction requires perfect knowledge of the initial state, however, it does not characterize the work value of unknown or untrus…
[Phys. Rev. Lett. 130, 210401] Published Mon May 22, 2023
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physics.hist-ph updates on arXiv.org
by
Patrick Moylan
Mon May 22 2023 08:46:23 (5 days)
# 15.
Both Poincar\’e in his 1900 Festschrift paper \cite{Poincare} and Einstein in his 1905 \textsl{Annalen der Physik} article \cite{Einstein} were led to $E=mc^2$ by considering electromagnetic processes taking place in vacuo. Poincar\’e’s treatment is based on a generalization of the law of conservation of momentum to include radiation. Einstein’s analysis relies solely on energy conservation and the relativity principle together with certain assumptions, which have served as the source of criticism of the paper beginning with Max Planck in 1907. We show that these objections raised by Planck and others can be traced back to Einstein’s failure to make use of momentum considerations. Relevance of our findings to a proper understanding of Ives’ criticism of Einstein’s paper is pointed out.
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Mon May 22 2023 06:17:30 (5 days)
# 16.
Rovelli, Carlo and Heilbron, John (2023) Matrix Mechanics Mis-Prized: Max Born’s Belated Nobelization. [Preprint]
The Lorentz Transformation in a Fishbowl: A Comment on Cheng and Read’s “Why Not a Sound Postulate?”
Foundations of Physics volume 53, Article number: 55 (2023)
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