Instability of gravitational baryogenesis with fermions

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Published 1 June 2017 © 2017 IOP Publishing Ltd and Sissa Medialab srl
, , Citation E. Arbuzova and A. Dolgov JCAP06(2017)001 DOI 10.1088/1475-7516/2017/06/001

1475-7516/2017/06/001

Abstract

The derivative coupling of baryonic current to the curvature scalar in gravitational baryogenesis scenarios leads to higher order equations for gravitational field. It is shown that these equations are strongly unstable and destroy standard cosmology. This is a generalization of our earlier results obtained for scalar baryons to realistic fermions.

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10.1088/1475-7516/2017/06/001