De, Avik and Loo, Tee-How and Solanki, Raja and Sahoo, P. K. (2021) How a conformally flat (GR)4 impacts gauss-bonnet gravity? Fortschritte Der Physik-Progress of Physics, 69 (10). ISSN 0015-8208, DOI https://doi.org/10.1002/prop.202100088.
Full text not available from this repository.Abstract
First and foremost, we show that a 4-dimensional conformally flat generalized Ricci recurrent spacetime (GR)4 is an Einstein manifold. We examine such a spacetime as a solution of f(R,G)-gravity theory and it is shown that the additional terms from the modification of the gravitational sector can be expressed as a perfect fluid. Several energy conditions are investigated with f(R,G)=R+G and f(R,G)=R2+GlnG. For both the models, weak, null and dominant energy conditions are satisfied while strong energy condition is violated, which is a good agreement with the recent observational studies which reveals that the current universe is in accelerating phase.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Conformally flat; Energy conditions; Generalised ricci recurrent; f (R, G) gravity; Modified Gauss-Bonnet gravity |
| Subjects: | Q Science > QA Mathematics |
| Divisions: | Faculty of Science > Institute of Mathematical Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 04 Mar 2022 03:09 |
| Last Modified: | 04 Mar 2022 03:09 |
| URI: | http://eprints.um.edu.my/id/eprint/26464 |
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