Large-scale inhomogeneities in modified Chaplygin gas cosmologies

Mostrar todas las versiones(3)

We extend the homogeneous modified Chaplygin cosmologies to large-scale perturbations by formulating a Zeldovich-like approximation. We show that the model interpolates between an epoch with a soft equation of state and a de Sitter phase, and that in the intermediate regime its matter content is sim...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Chimento, L.P., Lazkoz, R.
Formato: Artículo publishedVersion
Publicado: 2005
Materias:
article
chemical modification
cold
cosmos
darkness
gas
molecular model
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03702693_v615_n3-4_p146_Chimento
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_03702693_v615_n3-4_p146_Chimento_oai
Aporte de:
Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
id I28-R145-paper_03702693_v615_n3-4_p146_Chimento_oai
record_format dspace
spelling I28-R145-paper_03702693_v615_n3-4_p146_Chimento_oai2020-10-19 Chimento, L.P. Lazkoz, R. 2005 We extend the homogeneous modified Chaplygin cosmologies to large-scale perturbations by formulating a Zeldovich-like approximation. We show that the model interpolates between an epoch with a soft equation of state and a de Sitter phase, and that in the intermediate regime its matter content is simply the sum of dust and a cosmological constant. We then study how the large-scale inhomogeneities evolve and compare the results with cold dark matter (CDM), ΛCDM and generalized Chaplygin scenarios. We find that unlike that like the latter, our models resemble ΛCDM. © 2005 Elsevier B.V. All rights reserved. Fil:Chimento, L.P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_03702693_v615_n3-4_p146_Chimento info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Phys Lett Sect B Nucl Elem Part High-Energy Phys 2005;615(3-4):146-152 article chemical modification cold cosmos darkness gas molecular model Large-scale inhomogeneities in modified Chaplygin gas cosmologies info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_03702693_v615_n3-4_p146_Chimento_oai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-145
collection Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic article
chemical modification
cold
cosmos
darkness
gas
molecular model
spellingShingle article
chemical modification
cold
cosmos
darkness
gas
molecular model
Chimento, L.P.
Lazkoz, R.
Large-scale inhomogeneities in modified Chaplygin gas cosmologies
topic_facet article
chemical modification
cold
cosmos
darkness
gas
molecular model
description We extend the homogeneous modified Chaplygin cosmologies to large-scale perturbations by formulating a Zeldovich-like approximation. We show that the model interpolates between an epoch with a soft equation of state and a de Sitter phase, and that in the intermediate regime its matter content is simply the sum of dust and a cosmological constant. We then study how the large-scale inhomogeneities evolve and compare the results with cold dark matter (CDM), ΛCDM and generalized Chaplygin scenarios. We find that unlike that like the latter, our models resemble ΛCDM. © 2005 Elsevier B.V. All rights reserved.
format Artículo
Artículo
publishedVersion
author Chimento, L.P.
Lazkoz, R.
author_facet Chimento, L.P.
Lazkoz, R.
author_sort Chimento, L.P.
title Large-scale inhomogeneities in modified Chaplygin gas cosmologies
title_short Large-scale inhomogeneities in modified Chaplygin gas cosmologies
title_full Large-scale inhomogeneities in modified Chaplygin gas cosmologies
title_fullStr Large-scale inhomogeneities in modified Chaplygin gas cosmologies
title_full_unstemmed Large-scale inhomogeneities in modified Chaplygin gas cosmologies
title_sort large-scale inhomogeneities in modified chaplygin gas cosmologies
publishDate 2005
url http://hdl.handle.net/20.500.12110/paper_03702693_v615_n3-4_p146_Chimento
http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_03702693_v615_n3-4_p146_Chimento_oai
work_keys_str_mv AT chimentolp largescaleinhomogeneitiesinmodifiedchaplygingascosmologies
AT lazkozr largescaleinhomogeneitiesinmodifiedchaplygingascosmologies
_version_ 1766026699427807232

Ejemplares similares