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Testing an inflationary era in curvature–matter coupling gravity.
- Source :
-
International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology . Dec2021, Vol. 30 Issue 16, p1-14. 14p. - Publication Year :
- 2021
-
Abstract
- In this paper, we investigate the cosmological inflation in the context of a minimal matter–geometry coupling, which is based on the f (R , T) gravity theory, 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 the various inflation-related observables such as the tensor-to-scalar ratio r , the scalar spectral index n s , the running α s of the spectral index and the tensor spectral n T for two specific f (R , T) models from the Hubble slow-roll parameters. To observe the viability of these models, a numerical analysis of such parameters has been done. The results showed that, by using the various values of free parameters, it is possible to obtain a viable compatible with the observational data. [ABSTRACT FROM AUTHOR]
- Subjects :
- *INFLATIONARY universe
*GRAVITY
*HUBBLE constant
*NUMERICAL analysis
*DARK energy
Subjects
Details
- Language :
- English
- ISSN :
- 02182718
- Volume :
- 30
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology
- Publication Type :
- Academic Journal
- Accession number :
- 154929896
- Full Text :
- https://doi.org/10.1142/S0218271821400071