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Energy conditions in f(R,A) gravity.
- Source :
-
International Journal of Geometric Methods in Modern Physics . Mar2024, Vol. 21 Issue 3, p1-28. 28p. - Publication Year :
- 2024
-
Abstract
- In this paper, we consider the framework of the newly proposed modified theory of gravity named f (R , A) gravity, wherein R and A signify the Ricci and anticurvature scalars, respectively. For our cosmic discussions, we evaluate a renowned f (R , A) model, incorporating various forms of the scale factor within the context of Friedmann–Robertson–Walker (FRW) spacetime. Our exploration delves into energy conditions, the effective equation of state parameter and the stability of models within the f (R , A) theory. These models are further elucidated through graphical representations plotted against time and their respective model constants. Notably, it is observed that scale factors with exponential terms yield more consistent results in comparison to those of power-law forms, given specific values of model constants. [ABSTRACT FROM AUTHOR]
- Subjects :
- *GRAVITY
*EQUATIONS of state
*SPACETIME
*DARK energy
Subjects
Details
- Language :
- English
- ISSN :
- 02198878
- Volume :
- 21
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- International Journal of Geometric Methods in Modern Physics
- Publication Type :
- Academic Journal
- Accession number :
- 175994537
- Full Text :
- https://doi.org/10.1142/S0219887824500701