Large-scale inhomogeneities in modified Chaplygin gas cosmologies

Autores
Chimento, Luis Pascual; Lazkoz, Ruth
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: Chimento, Luis Pascual. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Lazkoz, Ruth. Euskal Herriko Unibertsitatea; España
Materia
Homogeneous Chaplygin Gas
Zeldovich Approximation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/73262
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Large-scale inhomogeneities in modified Chaplygin gas cosmologiesChimento, Luis PascualLazkoz, RuthHomogeneous Chaplygin GasZeldovich Approximationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We 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.Fil: Chimento, Luis Pascual. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; ArgentinaFil: Lazkoz, Ruth. Euskal Herriko Unibertsitatea; EspañaElsevier Science2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/73262Chimento, Luis Pascual; Lazkoz, Ruth; Large-scale inhomogeneities in modified Chaplygin gas cosmologies; Elsevier Science; Physics Letters B; 615; 3-4; 12-2005; 146-1520370-2693CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2005.04.029info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:29:40Zoai:ri.conicet.gov.ar:11336/73262instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:29:40.267CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Large-scale inhomogeneities in modified Chaplygin gas cosmologies
title Large-scale inhomogeneities in modified Chaplygin gas cosmologies
spellingShingle Large-scale inhomogeneities in modified Chaplygin gas cosmologies
Chimento, Luis Pascual
Homogeneous Chaplygin Gas
Zeldovich Approximation
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
dc.creator.none.fl_str_mv Chimento, Luis Pascual
Lazkoz, Ruth
author Chimento, Luis Pascual
author_facet Chimento, Luis Pascual
Lazkoz, Ruth
author_role author
author2 Lazkoz, Ruth
author2_role author
dc.subject.none.fl_str_mv Homogeneous Chaplygin Gas
Zeldovich Approximation
topic Homogeneous Chaplygin Gas
Zeldovich Approximation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: Chimento, Luis Pascual. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
Fil: Lazkoz, Ruth. Euskal Herriko Unibertsitatea; España
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.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/73262
Chimento, Luis Pascual; Lazkoz, Ruth; Large-scale inhomogeneities in modified Chaplygin gas cosmologies; Elsevier Science; Physics Letters B; 615; 3-4; 12-2005; 146-152
0370-2693
CONICET Digital
CONICET
url http://hdl.handle.net/11336/73262
identifier_str_mv Chimento, Luis Pascual; Lazkoz, Ruth; Large-scale inhomogeneities in modified Chaplygin gas cosmologies; Elsevier Science; Physics Letters B; 615; 3-4; 12-2005; 146-152
0370-2693
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physletb.2005.04.029
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846082768570679296
score 13.22299

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