f(R, T) models applied to baryogenesis

E. H. Baffou; M. J. S. Houndjo; D. A. Kanfon; I. G. Salako

doi:10.1140/epjc/s10052-019-6559-0

EPJ

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2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2019) 79: 112
https://doi.org/10.1140/epjc/s10052-019-6559-0

Regular Article - Theoretical Physics

f(R, T) models applied to baryogenesis

E. H. Baffou¹^,2^*, M. J. S. Houndjo¹^,2, D. A. Kanfon²^,3 and I. G. Salako¹^,4

¹ Institut de Mathématiques et de Sciences Physiques, 01 BP 613, Porto-Novo, Bénin
² Faculté des Sciences et Techniques de Natitingou, BP 72, Natitingou, Bénin
³ Département de Physique, Université d’Abomey-Calavi, BP 526, Calavi, Bénin
⁴ Département de Physique, Université Nationale d’Agriculture, 01 BP 55, Porto-Novo, Bénin

^* e-mail: baffouhet@gmail.com

Received: 15 October 2018
Accepted: 20 December 2018
Published online: 5 February 2019

Abstract

This paper is devoted to the reproduction of the gravitational baryogenesis epoch in the context of f(R, T) theory of gravity, where R and T are respectively the curvature scalar and the trace of the energy-momentum tensor, respectively. It is assumed a minimal coupling between matter and gravity. In particular we consider the following two models, $f(R,T) = R +\alpha T + \beta T^2$ and $f(R,T) = R+ \mu R^2 + \lambda T$ , with the assumption that the universe is filled by dark energy and perfect fluid where the baryon to entropy ratio during a radiation domination era is non-zero. We constrain the models with the cosmological gravitational baryogenesis scenario, highlighting the appropriate values of model’s parameters compatible with the observation data of the baryon-entropy ratio.