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Symmetry
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Symmetry in Neutrino Physics and Astrophysics
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Symmetry in Neutrino Physics and Astrophysics

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

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 3670

Special Issue Editors

Prof. Dr. Célio Adrega De Moura Junior

E-Mail Website
Guest Editor
Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, SP, Brazil
Interests: Neutrino physics and astrophysics; Beyond Standard Model Physics; searches for dark matter particles; searches for CPT and Lorentz Invariance violations
Dr. Fernando Rossi-Torres

E-Mail Website
Guest Editor
Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Santo André 09210-580, SP, Brazil
Interests: Neutrino phenomenology; supernova neutrinos; dark matter searches; extensions of the Standard Model of Elementary Particles

Special Issue Information

Dear Colleagues,

Neutrinos provide one of the most exciting opportunities to answer intriguing questions about the origin of the universe, the constitution of matter, and the laws governing the interactions and intrinsic properties of elementary particles. Neutrino research aims to determine neutrino absolute masses and their hierarchy, the existence of CP symmetry violation in the leptonic sector, which would help to explain matter–antimatter asymmetry, CPT and Lorentz Invariance violations, the mechanism through which neutrinos acquire mass, the source of astrophysical neutrinos, the interaction of neutrinos beyond the standard model of elementary particles, neutrinos as a means to better understand or control their own sources, and the list goes on. In this environment of constant confrontation of experimental data with theories and evolving ideas, it is crucial to always record through publication up-to-date information, research results, and new perspectives in this rich field of academic study. We hope that you will contribute with your valuable knowledge. 

Prof. Dr. Célio Adrega De Moura Junior
Dr. Fernando Rossi-Torres
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

  • neutrino phenomenology
  • nonstandard neutrino interaction
  • astrophysical neutrinos
  • atmospheric neutrinos
  • terrestrial neutrinos
  • neutrino mass and oscillations
  • CPT and CP symmetry violations
  • Lorentz invariance violation
  • neutrino decay
  • decoherence

Published Papers (2 papers)

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Research

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36 pages, 803 KiB  
Article
Symmetry in Neutrino Oscillation in Matter: New Picture and the νSM–Non-Unitarity Interplay
by Hisakazu Minakata
Symmetry 2022, 14(12), 2581; https://doi.org/10.3390/sym14122581 - 06 Dec 2022
Cited by 4 | Viewed by 2269
Abstract
We update and summarize the present status of our understanding of the reparametrization symmetry with an i↔j state exchange in neutrino oscillation in matter. We introduce a systematic method called “Symmetry Finder” (SF) to uncover such symmetries, demonstrate its efficient hunting [...] Read more.
We update and summarize the present status of our understanding of the reparametrization symmetry with an i↔j state exchange in neutrino oscillation in matter. We introduce a systematic method called “Symmetry Finder” (SF) to uncover such symmetries, demonstrate its efficient hunting capability, and examine their characteristic features. Apparently they have a local nature: the 1–2 and 1–3 state exchange symmetries exist at around the solar and atmospheric resonances, respectively, with the level-crossing states exchanged. However, this view is not supported, to date, in the globally valid Denton et al. (DMP) perturbation theory, which possesses the 1–2, but not the 1–3, exchange symmetry. This is probably due to our lack of understanding, and we find a clue for a larger symmetry structure than we know of. In the latter part of this article, we introduce non-unitarity, or unitarity violation (UV), into the νSM neutrino paradigm, a low-energy description of beyond νSM new physics at a high (or low) scale. Based on the analyses of UV extended versions of the atmospheric resonance and the DMP perturbation theories, we argue that the reparametrization symmetry has a diagnostic capability for the theory with the νSM and UV sectors. Speculation is given on the topological nature of the identity, which determines the transformation property of the UV α parameters. Full article
(This article belongs to the Special Issue Symmetry in Neutrino Physics and Astrophysics)
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Review

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22 pages, 405 KiB  
Review
Time–Energy Uncertainty Relation for Neutrino Oscillations: Historical Development, Applications, and Future Prospects
by Giuseppe Gaetano Luciano and Luca Smaldone
Symmetry 2023, 15(11), 2032; https://doi.org/10.3390/sym15112032 - 08 Nov 2023
Viewed by 675
Abstract
The time–energy uncertainty relation (TEUR) plays a fundamental role in quantum mechanics, as it allows the grasping of peculiar aspects of a variety of phenomena based on very general principles and symmetries of the theory. Using the Mandelstam–Tamm method, TEUR has recently been [...] Read more.
The time–energy uncertainty relation (TEUR) plays a fundamental role in quantum mechanics, as it allows the grasping of peculiar aspects of a variety of phenomena based on very general principles and symmetries of the theory. Using the Mandelstam–Tamm method, TEUR has recently been derived for neutrino oscillations by connecting the uncertainty in neutrino energy with the characteristic timescale of oscillations. Interestingly, the suggested interpretation of neutrinos as unstable-like particles has proved to naturally emerge in this context. Further aspects were later discussed in semiclassical gravity theory, by computing corrections to the neutrino energy uncertainty in a generic stationary curved spacetime, and in quantum field theory, where the clock observable turns out to be identified with the non-conserved flavor charge operator. In the present work, we give an overview on the above achievements. In particular, we analyze the implications of TEUR and explore the impact of gravitational and non-relativistic effects on the standard condition for neutrino oscillations. Full article
(This article belongs to the Special Issue Symmetry in Neutrino Physics and Astrophysics)
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