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 effects. © IOP Publishing Ltd.
On the physical significance of infra-red corrections to inflationary observables / Bartolo, N.; Matarrese, S.; Pietroni, M.; Riotto, A.; Seery, D.. - In: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. - ISSN 1475-7516. - 2008:1(2008), p. 015. [10.1088/1475-7516/2008/01/015]
On the physical significance of infra-red corrections to inflationary observables
Pietroni, M.Membro del Collaboration Group
;Riotto, A.Membro del Collaboration Group
;
2008-01-01
Abstract
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 effects. © IOP Publishing Ltd.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
