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

Understand

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.