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FLRW-Cosmology in Generic Gravity Theories

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arxiv 2009.12825 v2 pith:XT2PBYRZ submitted 2020-09-27 gr-qc

Metin Gurses , Yaghoub Heydarzade This is my paper
classification gr-qc
keywords genericgravitymathcaltheoriesarbitrarycasesdimensionsequations
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abstract

We prove that for the Friedmann-Lemaitre-Robertson-Walker metric, the field equations of any generic gravity theory in arbitrary dimensions are of the perfect fluid type. The cases of general Lovelock and $\mathcal{F}(R, \mathcal{G})$ theories are given as examples.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Thermodynamics of FLRW universe in Quadratic Gravity

    gr-qc 2025-07 reject novelty 5.0 of 10

    Quadratic-gravity terms are claimed to shift the thermodynamic phase structure of the FLRW apparent horizon, but the printed critical-radius formula does not follow from the paper's own equation of state.

  2. Generalized Misner-Sharp energy in $f(R,\mathcal{G})$ gravity

    gr-qc 2025-06 conditional novelty 4.0 of 10

    This paper extends the Misner-Sharp quasilocal energy to f(R,G) gravity and applies it to apparent horizon thermodynamics, finding a phase transition in the adiabatic index for certain models.

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