Almost pseudo-Ricci symmetric spacetime solutions in F(R)-gravity

The objective of the present paper is to study 4-dimensional almost pseudo Ricci symmetric perfect fluid spacetimes ( APRS ) 4 . We show that a Robertson–Walker spacetime is ( APRS ) 4 and vice versa under certain condition imposed on its scale factor. Some popular toy models of F ( R )-gravity are...

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Veröffentlicht in:General relativity and gravitation 2021, Vol.53 (1), Article 5
Hauptverfasser: De, Avik, Loo, Tee-How
Format: Artikel
Sprache:eng
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Zusammenfassung:The objective of the present paper is to study 4-dimensional almost pseudo Ricci symmetric perfect fluid spacetimes ( APRS ) 4 . We show that a Robertson–Walker spacetime is ( APRS ) 4 and vice versa under certain condition imposed on its scale factor. Some popular toy models of F ( R )-gravity are also studied under the current setting and various energy conditions are investigated.
ISSN:0001-7701
1572-9532
DOI:10.1007/s10714-020-02775-y