Curvature perturbation spectrum from false vacuum inflation

Details Curvature perturbation spectrum from false vacuum inflation Curvature perturbation spectrum from false vacuum inflation

Nov 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1078..518g&link_type=abstract

SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS. AIP Conference Proceedings, Volume 1078, pp. 518-520 (2008).

Physics

Cosmology, Models Beyond The Standard Model, Supersymmetric Models

Scientific paper

In the inflationary cosmology it occurs frequently that the inflaton field is trapped in a local, transient minimum with non-zero vacuum energy. The difficulty regarding the curvature perturbation produced during such a stage is that classically the inflaton does not move so that the comoving hypersurfaces are not well defined at linear order in the scalar field perturbation. In this paper, assuming a mechanism of trapping which resembles a high temperature correction to the potential, we explicitly calculate for the first time the resulting power spectrum of the curvature perturbation by evaluating the quantum two-point correlation function directly. The spectrum is steeply blue with the spectral index nR = 4.

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