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Sat Jun 15 2024 04:48:26 (5 hours)
# 1.
Koberinski, Adam (2024) The breakdown of effective field theory in particle physics: Lessons for understanding intertheoretic relations. [Preprint]
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\’Alvaro Mozota Frauca
Fri Jun 14 2024 12:01:08 (22 hours)
# 2.
arXiv:2406.08501v1 Announce Type: cross Abstract: In this paper I offer an introduction to group field theory (GFT) and to some of the issues affecting the foundations of this approach to quantum gravity. I first introduce covariant GFT as the theory that one obtains by interpreting the amplitudes of certain spin foam models as Feynman amplitudes in a perturbative expansion. However, I argue that it is unclear that this definition of GFTs amounts to something beyond a computational rule for finding these transition amplitudes and that GFT doesn’t seem able to offer any new insight into the foundations of quantum gravity. Then, I move to another formulation of GFT which I call canonical GFT and which uses the standard structures of quantum mechanics. This formulation is of extended use in cosmological applications of GFT, but I argue that it is only heuristically connected with the covariant version and spin foam models. Moreover, I argue that this approach is affected by a version of the problem of time which raises worries about its viability. Therefore, I conclude that there are serious concerns about the justification and interpretation of GFT in either version of it.
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Johan F. Hoorn, Johnny K. W. Ho
Fri Jun 14 2024 12:01:08 (22 hours)
# 3.
arXiv:2406.08533v1 Announce Type: new Abstract: The observer effect in quantum physics states that observation inevitably influences the system being observed. Our proposed epistemic framework treats the observer as an integral part of sensory information processing within entangled quantum systems, highlighting the subjective and probabilistic aspects of observation and inference. Our study introduces a hierarchical model for fuzzy instance classification, which aligns sensory input with an observer’s pre-existing beliefs and associated quantum probability-based truth values. Sensory data evolves via interaction with observer states, as described by the Lindblad master equation, and is then classified adaptively using positive operator-valued measures (POVM). Our parametrization employs measures of concurrent similarity and dissimilarity, facilitating perceptual associations and asymmetric cognition. The observer’s position on a skeptic-believer spectrum modulates ambiguous matching of noisy perceptions. We show that sensory information becomes intricately entangled with observer states, yielding a wide array of probabilistic classification results. This framework lays the groundwork for a quantum-probability-based understanding of the observer effect, encouraging further exploration of quantum correlations and properties in cognitive processes.
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Nosratollah Jafari
Fri Jun 14 2024 12:01:08 (22 hours)
# 4.
arXiv:2406.08514v1 Announce Type: new Abstract: We study the \k{appa}-Poincare and the Magueijo-Smolin (MS) DSR in the context of the relative locality theory. This theory assigns connection, torsion and curvature to momentum space of every modified theory beyond special relativity. We obtain these quantities for the \k{appa}-Poincare and the MS DSR in all order of the Planck length, at the every point of the momentum space. The connection for the \k{appa}-Poincare theory and the MS DSR can be non-zero. The torsion for the \k{appa}-Poincare theory can also be non-zero, but it is zero for the MS DSR. The curvature for the \k{appa}-Poincare theory and the MS DSR are zero. We will find that the non-zero torsion and curvature of the momentum space implies a non-commutative spactime which is tangent to this momentum space. Also, we show that the torsion for every Abelian DSR theory is zero at the origin of the momentum space. At the end, we will discus dual spacetime transformations for the \k{appa}-Poincare theory and MS-DSR.
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Toby Pereira
Fri Jun 14 2024 12:01:07 (22 hours)
# 5.
arXiv:2010.05695v2 Announce Type: replace Abstract: This paper uses anthropic reasoning to argue for the Non-Arbitrary Existence Hypothesis (NAEH). Nick Bostrom’s Self-Sampling Assumption (SSA) combined with NAEH is compared against SSA without such an assumption and also SSA with the Self-Indication Assumption (SIA). When considered in the light of various thought experiments, including the Incubator Gedanken, the Doomsday Argument, the Presumptuous Philosopher and Bostrom’s Adam and Eve thought experiments, SSA with NAEH is found to give the most plausible results. The possibility of principles not explicitly considered in the paper being superior also is discussed but found to have limited plausibility.
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Mark Buchanan
Fri Jun 14 2024 08:00:00 (1 day)
# 6.
Nature Physics, Published online: 14 June 2024; doi:10.1038/s41567-024-02533-wHuman intelligence is not computable
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Ulrich Mohrhoff
Wed Jun 12 2024 16:28:46 (2 days)
# 7.
arXiv:2406.06659v1 Announce Type: cross Abstract: Owing to the contextuality of the properties of quantum objects, quantum mechanics does not appear to countenance the elision of the thinking and perceiving subject. If quantum objects owe their properties to the experimental conditions in which they are observed, the experimental apparatus cannot owe its properties to the quantum objects of which it is commonly said to be composed. It follows that neither quantum objects nor measuring instruments can be regarded as property-carriers existing independently of conscious subjects. However, if the difference between the classical domain and the quantum domain is understood as essentially the difference between the manifested world and what is instrumental in its manifestation, the elision of the subject can again be achieved.
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Wed Jun 12 2024 04:43:04 (3 days)
# 8.
Barrett, Thomas William and Manchak, JB (2024) On Coordinates and Spacetime Structure. [Preprint]
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Philippe Grangier, Alexia Auffeves, Nayla Farouki, Mathias Van Den Bossche, Olivier Ezratty
Tue Jun 11 2024 12:06:18 (3 days)
# 9.
arXiv:2406.05169v1 Announce Type: new Abstract: The purpose of this article is to provide an informal introduction to quantum physics, like if we were following the path of a police investigation. The scenery involves the demise, or vanishing, of some valuable properties of the two electrons in the helium atom. We will start from experimentally based evidence in order to analyse and tentatively explain physical facts, moving cautiously from a classical to a quantum description. Statements such as ‘a quantum superposition is like being in two states at the same time’, ‘quantum entanglement is like an instantaneous action at a distance’, or ‘facts are relative’, will be prohibited as empty of explanatory content. As a spoiler, and maybe against current common wisdom, but not giving up physical realism, the conclusion of the enquiry will be that classical physics and quantum physics can neither function nor even be conceived one without the other – in line with ideas attributed to e.g. Niels Bohr or Lev Landau.
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D V Redzic
Tue Jun 11 2024 12:06:17 (3 days)
# 10.
arXiv:2406.06159v1 Announce Type: new Abstract: A derivation of Balmer’s formula is presented, guided by the principles of simplicity and harmony.
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R. E. Kastner
Tue Jun 11 2024 12:06:15 (3 days)
# 11.
arXiv:2311.11456v2 Announce Type: replace Abstract: This essay offers a meta-level analysis in the sociology and history of physics in the context of the so-called “Arrow of Time Problem” or “Two Times Problem,” which asserts that the empirically observed directionality of time is in conflict with physical theory. I argue that there is actually no necessary conflict between physics and the arrow of time, and that the observed directionality of time is perfectly consistent with physics unconstrained by certain optional metaphysical, epistemological and methodological beliefs and practices characterizing the conventional or Received View.
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Christine C. Dantas (Astrophysics Division – INPE – Brazil)
Tue Jun 11 2024 12:06:13 (3 days)
# 12.
arXiv:1801.01719v3 Announce Type: replace-cross Abstract: “Norton’s Dome” is an example of a Newtonian system that violates the Lipschitz condition at a single point, leading to non-unique solutions (indeterminism). Here we reformulate this problem into a “weak” form (in the sense of distributions). In our description the indeterminism manifests through the problematic interpretation of initial conditions, since distributions (as linear functionals on the space of test functions) do not have values at individual points.
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Daniele Oriti
Mon Jun 10 2024 12:25:56 (4 days)
# 13.
arXiv:2212.12782v3 Announce Type: replace Abstract: We scan Paul K. Feyerabend’s work in philosophy of physics and of science more generally for insights that could be useful for the contemporary debate on the foundations of quantum mechanics. We take as our starting point what Feyerabend has actually written about quantum mechanics, but we extend our analysis to his general views on realism, objectivity, pluralism, and the relation between physics and philosophy, finding that these more general views could in fact offer many interesting insights for physicists and philosophers working on quantum foundations.
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Huw Price, Ken Wharton
Mon Jun 10 2024 12:25:45 (4 days)
# 14.
arXiv:2406.04571v1 Announce Type: cross Abstract: We propose that quantum entanglement is a special sort of selection artefact, explicable as a combination of (i) collider bias and (ii) a boundary constraint on the collider variable. We show that the proposal is valid for a special class of (`W-shaped’) Bell experiments involving delayed-choice entanglement swapping, and argue that it can be extended to the ordinary (`V-shaped’) case. The proposal requires no direct causal influence outside lightcones, and may hence offer a way to reconcile Bell nonlocality and relativity. The main argument is a detailed version of an approach previously outlined in arXiv:2404.13928 [quant-ph].
