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Thu Jun 15 2023 05:08:47 (2 days)
# 1.
Belot, Gordon (2023) That Does Not Compute: David Lewis on Credence and Chance. In: UNSPECIFIED.
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Thu Jun 15 2023 05:08:19 (2 days)
# 2.
Earman, John (2023) Evaluating the Symmetry to Reality Inference: Not All Symmetry Signals Redundancy. [Preprint]
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PRL: General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.
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Zain Mehdi, Joseph J. Hope, and Simon A. Haine
Wed Jun 14 2023 18:00:00 (2 days)
# 3.
Author(s): Zain Mehdi, Joseph J. Hope, and Simon A. Haine
We propose relativistic tests of quantum gravity using the gravitational self-interaction of photons in a cavity. We demonstrate that this interaction results in a number of quantum gravitational signatures in the quantum state of the light that cannot be reproduced by any classical theory of gravit…
[Phys. Rev. Lett. 130, 240203] Published Wed Jun 14, 2023
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Wed Jun 14 2023 00:48:52 (3 days)
# 4.
Christian, Joy (2023) Bell’s Theorem Begs the Question. [Preprint]
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Wed Jun 14 2023 00:47:42 (3 days)
# 5.
Williams, Porter and Dougherty, John and Miller, Michael (2023) Cluster Decomposition and Two Senses of Isolability. [Preprint]
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Wed Jun 14 2023 00:46:55 (3 days)
# 6.
Muller, F.A. (2023) Six Measurement Problems of Quantum Mechanics. [Preprint]
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physics.hist-ph updates on arXiv.org
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Isobel Falconer
Tue Jun 13 2023 09:29:42 (4 days)
# 7.
A brief account of the development of the concept of the gravitational constant and the debate around in in Britain at the end of the 19th century.
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Christopher S. Jackson, Carlton M. Caves
Tue Jun 13 2023 09:29:40 (4 days)
# 8.
We formulate a general program for […] analyzing continuous, differential weak, simultaneous measurements of noncommuting observables, which focuses on describing the measuring instrument autonomously, without states. The Kraus operators of such measuring processes are time-ordered products of fundamental differential positive transformations, which generate nonunitary transformation groups that we call instrumental Lie groups. The temporal evolution of the instrument is equivalent to the diffusion of a Kraus-operator distribution function defined relative to the invariant measure of the instrumental Lie group […]. This way of considering instrument evolution we call the Instrument Manifold Program. We relate the Instrument Manifold Program to state-based stochastic master equations. We then explain how the Instrument Manifold Program can be used to describe instrument evolution in terms of a universal cover[,] the universal instrumental Lie group, which is independent […] of Hilbert space. The universal instrument is generically infinite dimensional, in which situation the instrument’s evolution is chaotic. Special simultaneous measurements have a finite-dimensional universal instrument, in which case the instrument is considered to be principal and can be analyzed within the […] universal instrumental Lie group. Principal instruments belong at the foundation of quantum mechanics. We consider the three most fundamental examples: measurement of a single observable, of position and momentum, and of the three components of angular momentum. These measurements limit to strong simultaneous measurements. For a single observable, this gives the standard decay of coherence between inequivalent irreps; for the latter two, it gives a collapse within each irrep onto the canonical or spherical phase space, locating phase space at the boundary of these instrumental Lie groups.
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Francisco Pipa
Tue Jun 13 2023 09:29:39 (4 days)
# 9.
The received view in foundations and philosophy of physics holds that if we reject supplementing quantum theory (QT) with certain hidden variables and consider that unitary QT is correct and universal, we should adopt a relationalist approach to QT. Relationalist approaches are views that relativize measurement outcomes to, for example, worlds, systems, agents, or reference frames. It includes the Many-Worlds Interpretation, Relational Quantum Mechanics, and QBism. These approaches have potential costs connected with their relationalism that make them unattractive. Thus, if there exists a non-relational non-hidden variable universal approach to QT, it should be taken seriously. I will present an approach of this kind called Environmental-based Determinacy-based or EnD Quantum Theory (EnDQT), which goes beyond relationalism and the received view. EnDQT circumvents relationalism by constructing an account of indeterminate and determinate values, and underlying quantum properties, that is not relational while maintaining unitary non-hidden variable universal QT. In situations where a relationalist assumes that measurement outcomes are relativized, such as in the extended Wigner’s friend scenarios, according to EnDQT there aren’t determinate outcomes but systems with non-relational indeterminate values. In this approach, determinate values arose at some point in time through certain systems and persist due to them via certain interactions represented by certain networks. When there is isolation from the rest of the systems that belong to these networks, such as inside the friend’s lab in the extended Wigner’s friend scenarios, indeterminate values non-relationally arise inside. I will discuss other independent good reasons for adopting EnDQT, including providing a local causal explanation for Bell correlations and novel empirical posits represented by these networks.
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T. K. Safir, C. Fairoos, Deepak Vaid
Tue Jun 13 2023 09:29:26 (4 days)
# 10.
The physical process version of the first law can be obtained for bifurcate Killing horizons with certain assumptions. Especially, one has to restrict to the situations where the horizon evolution is quasi-stationary, under perturbations. We revisit the analysis of this assumption considering the horizon perturbations of Rindler horizon by a spherically symmetric object. We demonstrate that even if the quasi-stationary assumption holds, the change in entropy, in four space-time dimensions, diverges when considered between asymptotic cross-sections. However, these divergences do not appear in higher dimensions. We also analyze these features in the presence of a positive cosmological constant. In the process, we prescribe a recipe to establish the physical process first law in such ill-behaved scenarios.
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Tue Jun 13 2023 00:58:03 (4 days)
# 11.
Chen, Eddy Keming (2023) The Simplicity of Physical Laws. [Preprint]
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PRL: General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.
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Yunlong Xiao, Yuxiang Yang, Ximing Wang, Qing Liu, and Mile Gu
Mon Jun 12 2023 18:00:00 (4 days)
# 12.
Author(s): Yunlong Xiao, Yuxiang Yang, Ximing Wang, Qing Liu, and Mile Gu
Heisenberg’s uncertainty principle implies fundamental constraints on what properties of a quantum system we can simultaneously learn. However, it typically assumes that we probe these properties via measurements at a single point in time. In contrast, inferring causal dependencies in complex proces…
[Phys. Rev. Lett. 130, 240201] Published Mon Jun 12, 2023
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Nigel Goldenfeld
Mon Jun 12 2023 12:16:11 (4 days)
# 13.
The remarkable technical contributions of Michael E. Fisher to statistical physics and the development of the renormalization group are widely known and deeply influential. But less well-known is his early and profound appreciation of the way in which renormalization group created a revolution in our understanding of how physics — in fact, all science — is practiced, and the concomitant adjustment that needs to be made to our conception of the purpose and philosophy of science. In this essay, I attempt to redress this imbalance, with examples from Fisher’s writings and my own work. It is my hope that this tribute will help remove some of the confusion that surrounds the scientific usage of minimal models and renormalization group concepts, as well as their limitations, in the ongoing effort to understand emergence in complex systems.
This paper will be published in “50 years of the renormalization group”, dedicated to the memory of Michael E. Fisher, edited by Amnon Aharony, Ora Entin-Wohlman, David Huse and Leo Radzihovsky, World Scientific (in press).
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Maxim Tsarev; Johannes W. Thurner; Peter Baum
Mon Jun 12 2023 08:00:00 (5 days)
# 14.
Nature Physics, Published online: 12 June 2023; doi:10.1038/s41567-023-02092-6
Although massive electrons and massless photons are known to interact, their study has so far been confined to the linear regime. Experiments showing two-photon coherent control of a free-electron matter wave now introduce non-linearities.
