On the physical significance of infra-red corrections to inflationary observables
Seery ; D ; - ASI Sponsor
Jan - 2007

journal : Journal of Cosmology and Astroparticle Physics
type: Article Journal

Abstract
Inflationary observables, like the power spectrum, computed at oneorder and higher-order loop level seem to be plagued by large infra-red corrections. In this short note, we point out that these large infra-red corrections appear only in quantities which are not directly observable. This is in agreement with general expectations concerning infra-red effects.

keywords : cosmological perturbation theory,inflation,physics of the early universe