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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Publicado: 1991
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v44_n10_p3043_Calzetta
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 paper:paper_05562821_v44_n10_p3043_Calzetta
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spelling paper:paper_05562821_v44_n10_p3043_Calzetta2023-06-08T15:42:11Z 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 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. 1991 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v44_n10_p3043_Calzetta 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.
title Particle creation, inflation, and cosmic isotropy
spellingShingle 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
publishDate 1991
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v44_n10_p3043_Calzetta
http://hdl.handle.net/20.500.12110/paper_05562821_v44_n10_p3043_Calzetta
_version_ 1768546401388593152

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