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Revising the predictions of inflation for the cosmic microwave background

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Revising the predictions of inflation for the cosmic microwave background

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dc.contributor.author	Agulló, Iván
dc.contributor.author	Navarro Salas, José
dc.contributor.author	Olmo Alba, Gonzalo
dc.contributor.author	Parker, Leonard
dc.date.accessioned	2014-03-31T07:33:59Z
dc.date.available	2014-03-31T07:33:59Z
dc.date.issued	2009
dc.identifier.citation	Agulló, Iván Navarro Salas, José Olmo, Gonzalo J. Parker, Leonard 2009 Revising the predictions of inflation for the cosmic microwave background Physical Review Letters 103 6 061301-1 061301-4
dc.identifier.uri	http://hdl.handle.net/10550/33818
dc.description.abstract	We point out that, if quantum field renormalization is taken into account and the counterterms are evaluated at the Hubble-radius crossing time or few e-foldings after it, the predictions of slow-roll inflation for both the scalar and the tensorial power spectrum change significantly. This leads to a change in the consistency condition that relates the tensor-to-scalar amplitude ratio with spectral indices. A reexamination of the potentials ϕ2 and ϕ4 shows that both are compatible with five-year WMAP data. Only when the counterterms are evaluated at much larger times beyond the end of inflation does one recover the standard predictions. The alternative predictions presented here may soon come within the range of measurement of near-future experiments.
dc.relation.ispartof	Physical Review Letters, 2009, vol. 103, num. 6, p. 061301-1-061301-4
dc.subject	Camps, Teoria quàntica de
dc.subject	Astrofísica
dc.title	Revising the predictions of inflation for the cosmic microwave background
dc.type	journal article	es_ES
dc.date.updated	2014-03-31T07:33:59Z
dc.identifier.doi	10.1103/PhysRevLett.103.061301
dc.identifier.idgrec	056305
dc.rights.accessRights	open access	es_ES
dc.identifier.url	10.1103/PhysRevLett.103.061301