Probing baryogenesis in f(Q) gravity

Abstract The origin of matter domination in the Universe is one of the most exciting open puzzles in particle physics and cosmology. Despite many theoretical developments, the actual reason behind baryon-antibaryon asymmetry is still unknown. Our aim here is to examine this phenomenon in the framewo...

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Bibliographic Details
Published inEurophysics letters Vol. 146; no. 2; pp. 29001 - 29005
Main Authors Mishra, Sai Swagat, Bhat, Aaqid, Sahoo, P. K.
Format Journal Article
LanguageEnglish
Published Les Ulis EDP Sciences, IOP Publishing and Società Italiana di Fisica 01.04.2024
IOP Publishing
Subjects
Baryons
Cosmology
Gravitation theory
Particle physics
Universe
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Summary:Abstract The origin of matter domination in the Universe is one of the most exciting open puzzles in particle physics and cosmology. Despite many theoretical developments, the actual reason behind baryon-antibaryon asymmetry is still unknown. Our aim here is to examine this phenomenon in the framework of modified gravity theories, which have impressively elucidated the contemporary accelerated expansion of the Universe as well as the early phase. Consequently, this letter sets its sights on the task of constraining a specific variant of modified gravity, namely, f ( Q ) gravity, in conjunction with gravitational baryogenesis. The power law model and recently proposed DGP-like f ( Q ) models are considered to find the baryon-to-entropy ratio and compare them with the observed value, that is . Furthermore, we impose constraints on the additional degrees of freedom introduced by this modified theory of gravity.
ISSN:0295-5075
1286-4854
DOI:10.1209/0295-5075/ad329b