Analysis of baryon to entropy ratio in Ricci inverse gravity

被引：38

作者：

Jawad, Abdul ^{[1
]}

Sultan, Abdul Malik ^{[1
,2
]}

机构：

[1] COMSATS Univ Islamabad, Dept Math, Lahore Campus, Lahore 54000, Pakistan

[2] Univ Okara, Dept Math, Okara 56130, Pakistan

来源：

EPL | 2022年 / 138卷 / 02期

关键词：

GRAVITATIONAL BARYOGENESIS; F R; INFLATION; MODELS; ATTRACTOR; STABILITY;

D O I：

10.1209/0295-5075/ac6977

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This letter is devoted to investigate the matter-antimatter asymmetry through baryo-genesis (and generalized gravitational baryogenesis interaction) in the realm of f(R, A) theory of gravity also known as Ricci inverse gravity, where R is the curvature scalar and A is the anticurvature scalar. Baryogensis (baryon to entropy ratio eta(B)/S = eta(beta)-eta((beta) over bar)/S)is a theoretical process that took place in the early history of the universe producing supremacy of matter over antimatter, where S is entropy of universe and eta(B) (eta((beta) over bar)) is the baryon (anti-baryon) number. In this article, we inspect the consequences of CP-violating interactions proportional to partial derivative(v)(R + A) and partial derivative(v)f(R+ A). We take f(R, A) = R+ alpha/A as specific model to analyze the phenomenon of baryogenesis and generalized gravitational baryogenesis. Our outcomes show that f(R, A) gravity can come up consistently and significantly to the phenomenon of gravitational baryogenesis. We compare our results with latest astrophysical data of baryon to entropy ratio, which exhibits outstanding compatibility with the observational bounds. Copyright (C) 2022 EPLA

引用

页数：7

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