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FLRW-cosmology in generic gravity theories

European Physical Journal C (2020) 80(11)
DOI: 10.1140/epjc/s10052-020-08641-0
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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 F(R, G) theories are given as examples.

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Gürses, M., & Heydarzade, Y. (2020). FLRW-cosmology in generic gravity theories. European Physical Journal C, 80(11). https://doi.org/10.1140/epjc/s10052-020-08641-0

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