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Gradient Einstein-type spacetimes and modified gravity

  • University of Calcutta

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, at first, we investigate gradient Einstein-type spacetimes. After that, we study the properties of a gradient Einstein-type spacetime admitting a parallel vector field. In the next parts, we present a systematic study about gradient Einstein-type spacetime obeying f(R, T) and f(R,Lm) gravity theories. Finally, in the cosmological context we find some remarkable results.

Original languageEnglish
Pages (from-to)4003-4011
Number of pages9
JournalIndian Journal of Physics
Volume99
Issue number10
DOIs
Publication statusPublished - Sept 2025

Bibliographical note

Publisher Copyright:
© The Author(s) 2025.

Keywords

  • Dark matter era
  • Energy density
  • Generalized Robertson-Walker spacetime
  • Gradient Einstein-type spacetime
  • Isotropic pressure
  • Modified gravity
  • Parallel vector field
  • Perfect fluid
  • Phantom era
  • Roberton-Walker spacetime

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