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On the physical significance of infra-red corrections to inflationary observables

By N Bartolo, S Matarrese, M Pietroni, A Riotto and D Seery


Inflationary observables, like the power spectrum, computed at one-order 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 effect

Year: 2008
DOI identifier: 10.1088/1475-7516/2008/01/015
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