A numerical analysis for FRW universe in <i>f</i>(<i>R</i>, <i>T</i>) gravity
INTERNATIONAL JOURNAL OF MODERN PHYSICS D, vol.31, no.02, 2022 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 31 Issue: 02
- Publication Date: 2022
- Doi Number: 10.1142/s0218271822500055
- Journal Name: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, INSPEC, Metadex, zbMATH, Civil Engineering Abstracts
- Istanbul University Affiliated: Yes
Abstract
In this work, Friedmann-Robertson-Walker model is investigated in f (R,T) = R + alpha T + beta T-2 gravity for a perfect fluid by a numerical analysis. In order to solve the modified field equations, we use a new solution method based on to propose the functional forms of the energy density and the pressure. In this context, in keeping with the recent indications of the observed universe, we consider two different propositions. We show for both propositions that. the behaviors of the Hubble and the deceleration parameters are consistent with astrophysical observations and the model depicts de Sitter universe. It is also shown that the model incorporates the initial radiation-dominated era, and it is dominated by a quintessence like fluid at. late era for both the propositions.