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Symmetry
Special Issues
Symmetry in Quantum Fields, Gravitation, and Cosmology
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Symmetry in Quantum Fields, Gravitation, and Cosmology

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 2267

Special Issue Editors

Dr. Julio Marny Hoff Da Silva

E-Mail Website
Guest Editor
Departamento de Física, Universidade Estadual Paulista, UNESP, Av. Dr. Ariberto Pereira da Cunha, 333, Guaratingueta 12516-410, Brazil
Interests: gravity; quantum field theory; mathematical physics; spinors
Prof. Dr. Jose Abdalla Helayel-Neto

E-Mail Website
Guest Editor
Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro 22290-180, RJ, Brazil
Interests: quantum field theory; supersymmetry; supergravity

Special Issue Information

Dear Colleagues,

It is a great pleasure to launch this Special Issue dedicated to exploring the many aspects of symmetry in contemporary high-energy physics, namely in field theory (classical and quantum), gravitation and cosmology.

Symmetry is a foundational concept in theoretical physical construction, and its appreciation has served as the fulcrum to many deep developments in physics. Extensions of symmetry concepts as well as the investigation of symmetry breakings have also found relevance in the physical endeavor of describing nature in several energy scales.

This volume intends to contemplate different aspects of symmetry in the physical formulation, such as (but not restricted to) gauge symmetries, space–time symmetries, diffeomorphisms, and breaking of symmetries in many branches of High Energy Physics.

Prof. Dr. Julio Marny Hoff Da Silva
Prof. Dr. Jose Abdalla Helayel-Neto
Guest Editors

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. Symmetry 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 2400 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

  • gauge symmetry
  • space–time symmetry
  • Poincarè symmetry
  • Lorentz violating models
  • diffeomorphisms

Published Papers (2 papers)

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Research

25 pages, 790 KiB  
Article
Asymmetry between Galaxy Apparent Magnitudes Shows a Possible Tension between Physical Properties of Galaxies and Their Rotational Velocity
by Darius McAdam and Lior Shamir
Symmetry 2023, 15(6), 1190; https://doi.org/10.3390/sym15061190 - 02 Jun 2023
Cited by 4 | Viewed by 1942
Abstract
Despite over a century of research, the physics of galaxy rotation is not yet fully understood, and there is a clear discrepancy between the observed mass of galaxies and their rotational velocity. Here, we report on another observation of tension between the physical [...] Read more.
Despite over a century of research, the physics of galaxy rotation is not yet fully understood, and there is a clear discrepancy between the observed mass of galaxies and their rotational velocity. Here, we report on another observation of tension between the physical properties of galaxies and their rotational velocity. We compare the apparent magnitude of galaxies and find a statistically significant asymmetry between galaxies that rotate in the same direction relative to the Milky Way and galaxies that rotate in the opposite direction relative to the Milky Way. While asymmetry in the brightness is expected due to the Doppler shift effect, such asymmetry is expected to be subtle. The observations shown here suggest that the magnitude difference is sufficiently large to be detected by Earth-based telescopes. The asymmetry is consistent in both the northern and southern galactic poles. The difference is also consistent across several different instruments such as DECam, SDSS, Pan-STARRS, and HST as well as different annotation methods, which include automatic, manual, or crowdsourcing annotations through “Galaxy Zoo”. The observation can also explain other anomalies such as the Ho tension. Analysis of Ia supernovae where the host galaxies rotate in the same direction relative to the Milky Way shows a much smaller tension with the Ho value as estimated by the CMB. Full article
(This article belongs to the Special Issue Symmetry in Quantum Fields, Gravitation, and Cosmology)
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9 pages, 247 KiB  
Article
Tachyon Interactions
by Charles Schwartz
Symmetry 2023, 15(1), 209; https://doi.org/10.3390/sym15010209 - 11 Jan 2023
Cited by 1 | Viewed by 1048
Abstract
A consistent theory of free tachyons has shown how tachyon neutrinos can explain major cosmological phenomena, dark energy and dark matter. Now, we investigate how tachyon neutrinos might interact with other particles: the weak interactions. Using the quantized field operators for electrons and [...] Read more.
A consistent theory of free tachyons has shown how tachyon neutrinos can explain major cosmological phenomena, dark energy and dark matter. Now, we investigate how tachyon neutrinos might interact with other particles: the weak interactions. Using the quantized field operators for electrons and tachyon neutrinos, the simplest interaction shows how the chirality selection rule, put in by force in the Standard Model, comes out naturally. Then, I wander into a re-study of what we do with negative frequencies of plane wave solutions of relativistic wave equations. The findings are simple and surprising, leading to a novel understanding of how to construct quantum field theories. Full article
(This article belongs to the Special Issue Symmetry in Quantum Fields, Gravitation, and Cosmology)
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