f ( R ,  T ) models applied to baryogenesis

Baffou, E. H. (Aff1, Institut de Mathématiques et de Sciences Physiques, 01 BP 613, Porto-Novo, Bénin) (Aff2, Faculté des Sciences et Techniques de Natitingou, BP 72, Natitingou, Bénin) ; Houndjo, M. J. S. (Aff1, Institut de Mathématiques et de Sciences Physiques, 01 BP 613, Porto-Novo, Bénin) (Aff2, Faculté des Sciences et Techniques de Natitingou, BP 72, Natitingou, Bénin) ; Kanfon, D. A. (Aff2, Faculté des Sciences et Techniques de Natitingou, BP 72, Natitingou, Bénin) (Aff3, 0000 0001 0382 0205, Département de Physique, Université d’Abomey-Calavi, BP 526, Calavi, Bénin) ; Salako, I. G. (Aff1, Institut de Mathématiques et de Sciences Physiques, 01 BP 613, Porto-Novo, Bénin) (Aff4, Département de Physique, Université Nationale d’Agriculture, 01 BP 55, Porto-Novo, Bénin)

06 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+αT+βT2 and f(R,T)=R+μR2+λT , 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.


Published in: EPJC 79 (2019) 112
Published by: Springer/Società Italiana di Fisica
DOI: 10.1140/epjc/s10052-019-6559-0
License: CC-BY-3.0



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