Inflation and the semiclassical dynamics of a conformal scalar field

Details Inflation and the semiclassical dynamics of a conformal scalar field Inflation and the semiclassical dynamics of a conformal scalar field

2007-08-03

arxiv.org/abs/0708.0483v2

Phys.Rev.D77:044002,2008

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, REVTeX, no figures. Final version accepted for publication in PRD

Scientific paper

10.1103/PhysRevD.77.044002

We derive the semiclassical evolution of massless conformally coupled scalar matter in the de Sitter space-time from the Born-Oppenheimer reduction of the Wheeler-DeWitt equation. We find a remarkable difference with respect to the minimally coupled case: the effect of the quantum gravitational corrections do not depend on the momentum of the scalar mode up to second order in the Planck length and, therefore, there are no relevant corrections to the dispersion relation.

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