On the Physical Significance of Infra-red Corrections to Inflationary Observables

Abstract

Inflationary observables, like the power spectrum, computed at one- 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.

arXiv comment11 pages; LateX file; 5 figures. Some coefficients in Eq.(A6) corrected; References added

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