Particle creation, inflation, and cosmic isotropy

Within the framework of homogeneous models of the Universe, inflation provides the simplest explanation for the present cosmic isotropy, and a Bianchi type-IX (mixmaster) model is the least prejudiced guess we can make about the state of the Universe before the inflationary phase. However, a mixmast...

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Autor principal: Calzetta, E.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05562821_v44_n10_p3043_Calzetta
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_05562821_v44_n10_p3043_Calzetta
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spelling todo:paper_05562821_v44_n10_p3043_Calzetta2023-10-03T15:35:23Z Particle creation, inflation, and cosmic isotropy Calzetta, E. Within the framework of homogeneous models of the Universe, inflation provides the simplest explanation for the present cosmic isotropy, and a Bianchi type-IX (mixmaster) model is the least prejudiced guess we can make about the state of the Universe before the inflationary phase. However, a mixmaster model would not inflate unless either shear or the radiation energy density are large enough. Particle creation enhances the radiation energy density and therefore enlarges the set of inflating initial conditions for the Universe. © 1991 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05562821_v44_n10_p3043_Calzetta
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Within the framework of homogeneous models of the Universe, inflation provides the simplest explanation for the present cosmic isotropy, and a Bianchi type-IX (mixmaster) model is the least prejudiced guess we can make about the state of the Universe before the inflationary phase. However, a mixmaster model would not inflate unless either shear or the radiation energy density are large enough. Particle creation enhances the radiation energy density and therefore enlarges the set of inflating initial conditions for the Universe. © 1991 The American Physical Society.
format JOUR
author Calzetta, E.
spellingShingle Calzetta, E.
Particle creation, inflation, and cosmic isotropy
author_facet Calzetta, E.
author_sort Calzetta, E.
title Particle creation, inflation, and cosmic isotropy
title_short Particle creation, inflation, and cosmic isotropy
title_full Particle creation, inflation, and cosmic isotropy
title_fullStr Particle creation, inflation, and cosmic isotropy
title_full_unstemmed Particle creation, inflation, and cosmic isotropy
title_sort particle creation, inflation, and cosmic isotropy
url http://hdl.handle.net/20.500.12110/paper_05562821_v44_n10_p3043_Calzetta
work_keys_str_mv AT calzettae particlecreationinflationandcosmicisotropy
_version_ 1807315943396737024

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