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arXiv · 0711.4263

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

N. Bartolo·S. Matarrese·M. Pietroni·A. Riotto·D. Seery
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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.

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N. Bartolo, S. Matarrese, M. Pietroni, A. Riotto, D. Seery. 2007-12-04. On the Physical Significance of Infra-red Corrections to Inflationary Observables. https://doi.org/10.1088/1475-7516%2F2008%2F01%2F015

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