Quintessence dissipative superattractor cosmology

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We investigate the simplest quintessence dissipative dark matter attractor cosmology characterized by a constant quintessence baryotropic index and a power-law expansion. We show a class of accelerated coincidence-solving attractor solutions converging to this asymptotic behavior. Despite its simpli...

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Autores principales: Chimento, L.P., Jakubi, A.S., Zuccalâ, N.A.
Formato: JOUR
Materias:
article
cosmos
entropy
luminance
mathematical analysis
molecular model
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_05562821_v63_n10_p_Chimento
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_05562821_v63_n10_p_Chimento
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spelling todo:paper_05562821_v63_n10_p_Chimento2023-10-03T15:35:41Z Quintessence dissipative superattractor cosmology Chimento, L.P. Jakubi, A.S. Zuccalâ, N.A. article cosmos entropy luminance mathematical analysis molecular model We investigate the simplest quintessence dissipative dark matter attractor cosmology characterized by a constant quintessence baryotropic index and a power-law expansion. We show a class of accelerated coincidence-solving attractor solutions converging to this asymptotic behavior. Despite its simplicity, such a "superattractor" regime provides a model of the recent universe that also exhibits an excellent fit to supernovae luminosity observations and no age conflict. Our best fit gives a= 1.71 ±0.29 for the power-law exponent. We calculate for this regime the evolution of density and entropy perturbations. ©2001 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_v63_n10_p_Chimento
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
cosmos
entropy
luminance
mathematical analysis
molecular model
spellingShingle article
cosmos
entropy
luminance
mathematical analysis
molecular model
Chimento, L.P.
Jakubi, A.S.
Zuccalâ, N.A.
Quintessence dissipative superattractor cosmology
topic_facet article
cosmos
entropy
luminance
mathematical analysis
molecular model
description We investigate the simplest quintessence dissipative dark matter attractor cosmology characterized by a constant quintessence baryotropic index and a power-law expansion. We show a class of accelerated coincidence-solving attractor solutions converging to this asymptotic behavior. Despite its simplicity, such a "superattractor" regime provides a model of the recent universe that also exhibits an excellent fit to supernovae luminosity observations and no age conflict. Our best fit gives a= 1.71 ±0.29 for the power-law exponent. We calculate for this regime the evolution of density and entropy perturbations. ©2001 The American Physical Society.
format JOUR
author Chimento, L.P.
Jakubi, A.S.
Zuccalâ, N.A.
author_facet Chimento, L.P.
Jakubi, A.S.
Zuccalâ, N.A.
author_sort Chimento, L.P.
title Quintessence dissipative superattractor cosmology
title_short Quintessence dissipative superattractor cosmology
title_full Quintessence dissipative superattractor cosmology
title_fullStr Quintessence dissipative superattractor cosmology
title_full_unstemmed Quintessence dissipative superattractor cosmology
title_sort quintessence dissipative superattractor cosmology
url http://hdl.handle.net/20.500.12110/paper_05562821_v63_n10_p_Chimento
work_keys_str_mv AT chimentolp quintessencedissipativesuperattractorcosmology
AT jakubias quintessencedissipativesuperattractorcosmology
AT zuccalana quintessencedissipativesuperattractorcosmology
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