Lorentz Symmetry Violation of Cosmic Photons

As a basic symmetry of space-time, Lorentz symmetry has played important roles in various fields of physics, and it is a glamorous question whether Lorentz symmetry breaks. Since Einstein proposed special relativity, Lorentz symmetry has withstood very strict tests, but there are still motivations f...

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Bibliographic Details
Published in:Universe (Basel) 2022-06, Vol.8 (6), p.323
Main Authors: He, Ping, Ma, Bo-Qiang
Format: Article
Language:English
Subjects:
cosmic photon
Energy
Experiments
Geometry
Gravity
Lorentz symmetry violation
Lorentz violation phenomenon
Lorentz violation theory
Physicists
Physics
Quantum field theory
quantum gravity
Quantum theory
space-time structure
Spacetime
String theory
Symmetry
Theory of relativity
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Summary:As a basic symmetry of space-time, Lorentz symmetry has played important roles in various fields of physics, and it is a glamorous question whether Lorentz symmetry breaks. Since Einstein proposed special relativity, Lorentz symmetry has withstood very strict tests, but there are still motivations for Lorentz symmetry violation (LV) research from both theoretical consideration and experimental feasibility, that attract physicists to work on LV theories, phenomena and experimental tests with enthusiasm. There are many theoretical models including LV effects, and different theoretical models predict different LV phenomena, from which we can verify or constrain LV effects. Here, we introduce three types of LV theories: quantum gravity theory, space-time structure theory and effective field theory with extra-terms. Limited by the energy of particles, the experimental tests of LV are very difficult; however, due to the high energy and long propagation distance, high-energy particles from astronomical sources can be used for LV phenomenological researches. Especially with cosmic photons, various astronomical observations provide rich data from which one can obtain various constraints for LV researches. Here, we review four common astronomical phenomena which are ideal for LV studies, together with current constraints on LV effects of photons.
ISSN:2218-1997
2218-1997
DOI:10.3390/universe8060323