A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
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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| Formato: | INPR |
| Lenguaje: | English |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_14346044_v_n_p1_Anabitarte |
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todo:paper_14346044_v_n_p1_Anabitarte2023-10-03T16:15:39Z A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation Anabitarte, M. Bellini, M. 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 INPR English info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14346044_v_n_p1_Anabitarte |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| language |
English |
| orig_language_str_mv |
English |
| 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 |
INPR |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_14346044_v_n_p1_Anabitarte |
| work_keys_str_mv |
AT anabitartem aconfirmationofagreementofdifferentapproachesforscalargaugeinvariantmetricperturbationsduringinflation AT bellinim aconfirmationofagreementofdifferentapproachesforscalargaugeinvariantmetricperturbationsduringinflation AT anabitartem confirmationofagreementofdifferentapproachesforscalargaugeinvariantmetricperturbationsduringinflation AT bellinim confirmationofagreementofdifferentapproachesforscalargaugeinvariantmetricperturbationsduringinflation |
| _version_ |
1807319938150432768 |