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On the cosmological solutions in Weyl geometry

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Published 29 November 2021 © 2021 IOP Publishing Ltd and Sissa Medialab
, , Citation V.A. Berezin et al JCAP11(2021)053 DOI 10.1088/1475-7516/2021/11/053

1475-7516/2021/11/053

Abstract

We investigated the possibility of construction the homogeneous and isotropic cosmological solutions in Weyl geometry. We derived the self-consistency condition which ensures the conformal invariance of the complete set of equations of motion. There is the special gauge in choosing the conformal factor when the Weyl vector equals zero. In this gauge we found new vacuum cosmological solutions absent in General Relativity. Also, we found new solution in Weyl geometry for the radiation dominated universe with the cosmological term, corresponding to the constant curvature scalar in our special gauge. Possible relation of our results to the understanding both dark matter and dark energy is discussed.

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