Effects of gravitational perturbations on the evolution of scalar fields in the early universe

Details Effects of gravitational perturbations on the evolution of scalar fields in the early universe Effects of gravitational perturbations on the evolution of scalar fields in the early universe

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phlb..220..361b&link_type=abstract

Physics Letters B, Volume 220, Issue 3, p. 361-367.

Physics

11

Scientific paper

We study the evolution of inhomogeneous classical scalar field configurations which are not in thermal equilibrium in a radiation dominated pre-inflationary phase in the early universe. We take into account gravitational perturbations about the Friedmann- Robertson-Walker metric. Making use of gauge invariant variable, we show that provided the initial gravitational perturbations are not too large, they do not prevent the dynamical relaxation of the scalar field configuration to an almost homogeneous configuration which leads to inflation.

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