Abstract
The objective of the present paper is to study 4-dimensional almost pseudo Ricci symmetric perfect fluid spacetimes \((\textit{APRS})_4\). We show that a Robertson–Walker spacetime is \((\textit{APRS})_4\) 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.
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The authors were supported in part by the FRGS research grant (Grant No. FP137-2019A).
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De, A., Loo, TH. Almost pseudo-Ricci symmetric spacetime solutions in F(R)-gravity. Gen Relativ Gravit 53, 5 (2021). https://doi.org/10.1007/s10714-020-02775-y
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DOI: https://doi.org/10.1007/s10714-020-02775-y