FLRW-cosmology in generic gravity theories

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 $${\mathcal {F}}(R, {\mathcal {G}})$$ F ( R , G ) theories are given as examples....

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Main Authors: Metin Gürses, Yaghoub Heydarzade
Format: Article
Language:English
Published: SpringerOpen 2020-11-01
Series:European Physical Journal C: Particles and Fields
Online Access:http://link.springer.com/article/10.1140/epjc/s10052-020-08641-0
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author Metin Gürses
Yaghoub Heydarzade
author_facet Metin Gürses
Yaghoub Heydarzade
author_sort Metin Gürses
collection DOAJ
description 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 $${\mathcal {F}}(R, {\mathcal {G}})$$ F ( R , G ) theories are given as examples.
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spelling doaj.art-36e549aed694447ebad15a07cdf287822022-12-21T22:46:27ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60441434-60522020-11-0180111710.1140/epjc/s10052-020-08641-0FLRW-cosmology in generic gravity theoriesMetin Gürses0Yaghoub Heydarzade1Department of Mathematics, Faculty of Sciences, Bilkent UniversityDepartment of Mathematics, Faculty of Sciences, Bilkent UniversityAbstract 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 $${\mathcal {F}}(R, {\mathcal {G}})$$ F ( R , G ) theories are given as examples.http://link.springer.com/article/10.1140/epjc/s10052-020-08641-0
spellingShingle Metin Gürses
Yaghoub Heydarzade
FLRW-cosmology in generic gravity theories
European Physical Journal C: Particles and Fields
title FLRW-cosmology in generic gravity theories
title_full FLRW-cosmology in generic gravity theories
title_fullStr FLRW-cosmology in generic gravity theories
title_full_unstemmed FLRW-cosmology in generic gravity theories
title_short FLRW-cosmology in generic gravity theories
title_sort flrw cosmology in generic gravity theories
url http://link.springer.com/article/10.1140/epjc/s10052-020-08641-0
work_keys_str_mv AT metingurses flrwcosmologyingenericgravitytheories
AT yaghoubheydarzade flrwcosmologyingenericgravitytheories