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Study of stellar structures in f(ℛ,μνμν) theory.
- Source :
-
International Journal of Geometric Methods in Modern Physics . Jan2022, Vol. 19 Issue 1, p1-14. 14p. - Publication Year :
- 2022
-
Abstract
- This paper deals with the dynamics of cylindrical collapse with anisotropic fluid distribution in the framework of f (ℛ , μ ν μ ν) gravity. For this purpose, we consider non-static and static cylindrical spacetimes in the inner and outer regions of a star, respectively. To match both geometries at the hypersurface, we consider the Darmois junction conditions. We use the Misner–Sharp technique to examine the impacts of correction terms and effective fluid parameters on the dynamics of a cylindrical star. A correlation between the Weyl tensor and physical quantities is also developed. The conformally flat condition is not obtained due to the influence of anisotropic pressure and higher-order nonlinear terms. Further, we assume isotropic fluid and specific model of this theory which yields the conformally flat spacetime and inhomogeneous energy density. We conclude that the collapse rate reduces as compared to general relativity due to the inclusion of effective pressure and additional terms of this theory. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02198878
- Volume :
- 19
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of Geometric Methods in Modern Physics
- Publication Type :
- Academic Journal
- Accession number :
- 154292571
- Full Text :
- https://doi.org/10.1142/S0219887822500128