A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation

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We revisit an extension of the well-known formalism for gauge-invariant scalar metric fluctuations to study the spectra for both the inflaton and gauge-invariant (scalar) metric fluctuations in the framework of a single-field inflationary model, in which the quasi-exponential expansion is driven by...

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Autores principales: Anabitarte, M., Bellini, M.
Formato: Artículo publishedVersion
Lenguaje:Inglés
Publicado: 2009
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_14346044_v_n_p1_Anabitarte
https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14346044_v_n_p1_Anabitarte_oai
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spelling I28-R145-paper_14346044_v_n_p1_Anabitarte_oai2024-08-16 Anabitarte, M. Bellini, M. 2009 We revisit an extension of the well-known formalism for gauge-invariant scalar metric fluctuations to study the spectra for both the inflaton and gauge-invariant (scalar) metric fluctuations in the framework of a single-field inflationary model, in which the quasi-exponential expansion is driven by an inflaton which is minimally coupled to gravity. The proposal here examined is valid also for fluctuations with large amplitudes, but for cosmological scales, where vector and tensor perturbations can be neglected and the fluid is irrotacional. © 2009 Springer-Verlag / Società Italiana di Fisica. PB - Springer-Verlag application/pdf http://hdl.handle.net/20.500.12110/paper_14346044_v_n_p1_Anabitarte eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Eur. Phys. J. C 2009:1-5 A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14346044_v_n_p1_Anabitarte_oai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-145
collection Repositorio Digital de la Universidad de Buenos Aires (UBA)
language Inglés
orig_language_str_mv eng
description We revisit an extension of the well-known formalism for gauge-invariant scalar metric fluctuations to study the spectra for both the inflaton and gauge-invariant (scalar) metric fluctuations in the framework of a single-field inflationary model, in which the quasi-exponential expansion is driven by an inflaton which is minimally coupled to gravity. The proposal here examined is valid also for fluctuations with large amplitudes, but for cosmological scales, where vector and tensor perturbations can be neglected and the fluid is irrotacional. © 2009 Springer-Verlag / Società Italiana di Fisica. PB - Springer-Verlag
format Artículo
Artículo
publishedVersion
author Anabitarte, M.
Bellini, M.
spellingShingle Anabitarte, M.
Bellini, M.
A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
author_facet Anabitarte, M.
Bellini, M.
author_sort Anabitarte, M.
title A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
title_short A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
title_full A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
title_fullStr A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
title_full_unstemmed A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
title_sort confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
publishDate 2009
url http://hdl.handle.net/20.500.12110/paper_14346044_v_n_p1_Anabitarte
https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_14346044_v_n_p1_Anabitarte_oai
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