Pseudo generalized Ricci-recurrent spacetimes and modified gravity
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DOI: 10.1142/s0217732324500627
Abstract: In this paper, we introduce and characterize a pseudo-generalized Ricci-recurrent spacetimes and produce an example to verify the existence of such a spacetime. Then we demonstrate that a conformally flat generalized Ricci-recurrent spacetime with certain… read more here.
Keywords: recurrent spacetimes; spacetime; pseudo generalized; generalized ricci ... See more keywords
Generalized Ricci recurrent spacetimes and GRW spacetimes
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Geometric Methods in Modern Physics"
DOI: 10.1142/s0219887821502091
Abstract: The main goal of this paper is to study the properties of generalized Ricci recurrent perfect fluid spacetimes and the generalized Ricci recurrent (generalized Robertson–Walker (GRW)) spacetimes. It is proven that if the generalized Ricci… read more here.
Keywords: ricci recurrent; generalized ricci; perfect fluid; grw spacetimes ... See more keywords
Geodesic mappings of spaces with affine connnection onto generalized Ricci symmetric spaces
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DOI: 10.2298/fil1914475b
Abstract: The presented work is devoted to study of the geodesic mappings of spaces with affine connection onto generalized Ricci symmetric spaces. We obtained a fundamental system for this problem in a form of a system… read more here.
Keywords: geodesic mappings; ricci symmetric; generalized ricci; symmetric spaces ... See more keywords