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Bell's Theorem and Forms of Relativity

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Quantum Information".

Deadline for manuscript submissions: 16 September 2024 | Viewed by 1151

Special Issue Editor


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Guest Editor
Instytut Fizyki i Informatyki Stosowanej, Politechnika Gdańska, 80-233 Gdańsk, Poland
Interests: foundations of quantum mechanics and theories of relativity; interdisciplinary applications of quantum structures; generalized arithmetics and calculi

Special Issue Information

Dear Colleagues,

The original formulations of the Einstein–Podolsky–Rosen paradox (1935) and Bell's theorem (1964) were based on non-relativistic quantum mechanics. It is paradoxical that the conclusions drawn from both reasonings mainly impacted relativistic physics (for example, locality vs. nonlocality), which was reflected in the Nobel Prize-winning experiment of Alain Aspect's group.

The first theoretical works analyzing Bell's inequalities from the perspective of relativistic quantum mechanics and quantum field theory were published in 1984–1985. Issues on the border between Bell's theorem and special or general theories of relativity are today discussed in the literature in many different ways, although they still remain on the margins of science, far beyond the mainstream of research.

In this Special Issue, we would like to focus on the relativistic aspects of Bell's theorem, but in a much broader sense of the word "relativity". Of course, the concept of relativity, understood in the Einsteinian sense, is still valid. However, we would not like to limit ourselves to this quite standard perspective. After all, another aspect of relativity is the Copernican principle, stating that the Universe is homogeneous, which leads to a natural question about the cosmological aspects of Bell's theorem.

A completely different kind of relativity appears in the context of generalized arithmetic structures, generalized calculus, or hierarchies of mathematical models. Bell's theorem then appears as a kind of "confusion-of-languages” problem. It is also potentially very interesting to look at Bell's theorem from the point of view of mathematical and experimental psychology, where generalized arithmetic structures take the form of the Weber–Fechner phenomenon.

The aim of this Special Issue is to collect publications covering as many different types of relativity as possible and their impact on the interpretation of Bell's theorem.

Prof. Dr. Marek Czachor
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Entropy is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • relativistic Bell's inequality
  • relativistic Bell's theorem
  • local and non-local hidden variables
  • contextuality
  • non-Kolmogorovian probability
  • non-Boolean logic
  • non-Diophantine arithmetic
  • non-Euclidean geometry
  • non-Newtonian calculus

Published Papers (1 paper)

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Research

18 pages, 305 KiB  
Article
Hidden Tensor Structures
by Marek Czachor
Entropy 2024, 26(2), 145; https://doi.org/10.3390/e26020145 - 07 Feb 2024
Cited by 1 | Viewed by 754
Abstract
Any single system whose space of states is given by a separable Hilbert space is automatically equipped with infinitely many hidden tensor-like structures. This includes all quantum mechanical systems as well as classical field theories and classical signal analysis. Accordingly, systems as simple [...] Read more.
Any single system whose space of states is given by a separable Hilbert space is automatically equipped with infinitely many hidden tensor-like structures. This includes all quantum mechanical systems as well as classical field theories and classical signal analysis. Accordingly, systems as simple as a single one-dimensional harmonic oscillator, an infinite potential well, or a classical finite-amplitude signal of finite duration can be decomposed into an arbitrary number of subsystems. The resulting structure is rich enough to enable quantum computation, violation of Bell’s inequalities, and formulation of universal quantum gates. Less standard quantum applications involve a distinction between position and hidden position. The hidden position can be accompanied by a hidden spin, even if the particle is spinless. Hidden degrees of freedom are, in many respects, analogous to modular variables. Moreover, it is shown that these hidden structures are at the roots of some well-known theoretical constructions, such as the Brandt–Greenberg multi-boson representation of creation–annihilation operators, intensively investigated in the context of higher-order or fractional-order squeezing. In the context of classical signal analysis, the discussed structures explain why it is possible to emulate a quantum computer by classical analog circuit devices. Full article
(This article belongs to the Special Issue Bell's Theorem and Forms of Relativity)
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