arXiv
Open Access
2021
How a conformally flat (GR)4 impacts Gauss-Bonnet gravity?
Avik De
Tee-How Loo
Raja Solanki
P. K. Sahoo
Abstrak
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 $f(R, G) = R +\sqrt{G}$ and $f(R, G) = R^2+GlnG$. 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.
Topik & Kata Kunci
Penulis (4)
A
Avik De
T
Tee-How Loo
R
Raja Solanki
P
P. K. Sahoo
Akses Cepat
Informasi Jurnal
- Tahun Terbit
- 2021
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓