Asymptotic behavior of FRW cosmologies with many scalar fields

The dynamical evolution of FRW cosmologies conformally coupled to a finite set of scalar fields is studied. The scalar fields interact between them and we also consider a self-interaction term. It is proved that when k= -1 and k = 0 only one physical asymptotic behavior is possible: the radius of th...

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Detalles Bibliográficos
Publicado: 2002
Materias:
article
calculation
conformation
cosmos
dynamics
mathematical analysis
physics
theory
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v65_n2_p_Castagnino
http://hdl.handle.net/20.500.12110/paper_05562821_v65_n2_p_Castagnino
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_05562821_v65_n2_p_Castagnino
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spelling paper:paper_05562821_v65_n2_p_Castagnino2023-06-08T15:42:28Z Asymptotic behavior of FRW cosmologies with many scalar fields article calculation conformation cosmos dynamics mathematical analysis physics theory The dynamical evolution of FRW cosmologies conformally coupled to a finite set of scalar fields is studied. The scalar fields interact between them and we also consider a self-interaction term. It is proved that when k= -1 and k = 0 only one physical asymptotic behavior is possible: the radius of the universe expands forever. When k = 1 either we have the just described behavior or the universe will ultimately collapse in a finite time. But we also give evidence that an oscillatory chaotic behavior is possible in this case if a fine-tuning between the initial conditions is satisfied. © 2001 The American Physical Society. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v65_n2_p_Castagnino http://hdl.handle.net/20.500.12110/paper_05562821_v65_n2_p_Castagnino
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic article
calculation
conformation
cosmos
dynamics
mathematical analysis
physics
theory
spellingShingle article
calculation
conformation
cosmos
dynamics
mathematical analysis
physics
theory
Asymptotic behavior of FRW cosmologies with many scalar fields
topic_facet article
calculation
conformation
cosmos
dynamics
mathematical analysis
physics
theory
description The dynamical evolution of FRW cosmologies conformally coupled to a finite set of scalar fields is studied. The scalar fields interact between them and we also consider a self-interaction term. It is proved that when k= -1 and k = 0 only one physical asymptotic behavior is possible: the radius of the universe expands forever. When k = 1 either we have the just described behavior or the universe will ultimately collapse in a finite time. But we also give evidence that an oscillatory chaotic behavior is possible in this case if a fine-tuning between the initial conditions is satisfied. © 2001 The American Physical Society.
title Asymptotic behavior of FRW cosmologies with many scalar fields
title_short Asymptotic behavior of FRW cosmologies with many scalar fields
title_full Asymptotic behavior of FRW cosmologies with many scalar fields
title_fullStr Asymptotic behavior of FRW cosmologies with many scalar fields
title_full_unstemmed Asymptotic behavior of FRW cosmologies with many scalar fields
title_sort asymptotic behavior of frw cosmologies with many scalar fields
publishDate 2002
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05562821_v65_n2_p_Castagnino
http://hdl.handle.net/20.500.12110/paper_05562821_v65_n2_p_Castagnino
_version_ 1768545560828051456

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