Stellar structure of quark stars in a modified Starobinsky gravity
Abstract
We propose a form of gravity-matter interaction given by ω R T in the framework of f(R, T) gravity and examine the effect of such interaction in spherically symmetric compact stars. Treating the gravity-matter coupling as a perturbative term on the background of Starobinsky gravity, we develop a perturbation theory for equilibrium configurations. For illustration, we take the case of quark stars and explore their various stellar properties. We find that the gravity-matter coupling causes an increase in the stable maximal mass which is relevant for recent observations on binary pulsars.
- Publication:
-
European Physical Journal C
- Pub Date:
- July 2020
- DOI:
- 10.1140/epjc/s10052-020-8130-4
- arXiv:
- arXiv:2006.06421
- Bibcode:
- 2020EPJC...80..615M
- Keywords:
-
- General Relativity and Quantum Cosmology;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- Astrophysics - High Energy Astrophysical Phenomena
- E-Print:
- doi:10.1140/epjc/s10052-020-8130-4