Inflationary cosmology in f (R, T) modified gravity

被引：20
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.
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页数：12
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