Inflation inR 2 cosmology with massless conformal scalar field and adiabatic regularization

Details Inflation inR 2 cosmology with massless conformal scalar field and adiabatic regularization Inflation inR 2 cosmology with massless conformal scalar field and adiabatic regularization

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993gregr..25..245l&link_type=abstract

General Relativity and Gravitation, Volume 25, Issue 3, pp.245-256

Physics

3

Scientific paper

A cosmology described by a Robertson-Walker metric with Lagrangian √-g(@#@R+σR 2) and a massless conformal scalar field as matter content is considered. It is shown that, when the adiabatic regularization is performed, there is, in the spatially flat case, an inflationary solution which is not stable in the future, at first perturbative order, if the condition σ>t{p/2}/2160π (t p Planck time) is fulfilled and stable in the opposite case.

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