Inflationary cosmology in f (R, T) modified gravity

被引：19

作者：

Baffou, E. H. ^{[1
,3
]}

Houndjo, M. J. S. ^{[1
,3
]}

Salako, I. G. ^{[2
,3
]}

Houngue, T. ^{[3
]}

机构：

[1] Fac Sci & Tech Natitingou, BP 72, Natitingou, Benin

[2] Ecole Genie Rural EGR, 01BP 55, Ketou, Benin

[3] Inst Math & Sci Phys, 01 BP 613, Porto Novo, Benin

来源：

ANNALS OF PHYSICS | 2021年 / 434卷

关键词：

Inflation; Dark energy; Slow-roll inflation; DARK ENERGY; DYNAMICS; MODELS;

D O I：

10.1016/j.aop.2021.168620

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In this paper, we investigate the cosmological inflation scenario in the context of f (R, T) theory of gravity, where f is a generic function of the curvature scalar R and the trace T of the energy momentum tensor. Assuming that the slow roll inflation conditions hold true in f (R, T) gravity, we obtain from the Hubble slow roll parameters, the various inflation-related observables such as the tensor-to-scalar ratio r, the scalar spectral index ns, the running alpha s of the spectral index and the tensor spectral nT for two specific f (R, T) models. To see the viability of these models, a numerical analysis of such parameters has been done. The results show that by using the various values of free parameters it is possible to obtain a viable compatibility with the observational data. (c) 2021 Published by Elsevier Inc.

引用

页数：12

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