Dark matter to dark energy transition in k-essence cosmologies

Autores
Chimento, Luis Pascual; Forte, Mónica; Lazkoz, Ruth
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We implement the transition from dark matter to dark energy in k-essence cosmologies for a very large set of kinetic functions F, in a way alternative to recent proposals which use generalized Chaplygin gas and transient models. Here we require that the pressure admits a power-law expansion around some value of the kinetic energy where the pressure vanishes. In addition, for suitable values of the parameters of the model, the speed of sound of the dark matter will be low. We first present the discussion in fairly general terms, and later consider for illustration two examples. © World Scientific Publishing Company.
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: Forte, Mónica. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Lazkoz, Ruth. Universidad del Pais Vasco - Euskal Herriko Unibertsitatea, Campus Bizkaia; España
Materia
Dark Energy
Dark Matter
K-Essence
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/74245
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/74245
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Dark matter to dark energy transition in k-essence cosmologiesChimento, Luis PascualForte, MónicaLazkoz, RuthDark EnergyDark MatterK-Essencehttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We implement the transition from dark matter to dark energy in k-essence cosmologies for a very large set of kinetic functions F, in a way alternative to recent proposals which use generalized Chaplygin gas and transient models. Here we require that the pressure admits a power-law expansion around some value of the kinetic energy where the pressure vanishes. In addition, for suitable values of the parameters of the model, the speed of sound of the dark matter will be low. We first present the discussion in fairly general terms, and later consider for illustration two examples. © World Scientific Publishing Company.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: Forte, Mónica. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Lazkoz, Ruth. Universidad del Pais Vasco - Euskal Herriko Unibertsitatea, Campus Bizkaia; EspañaWorld Scientific2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/74245Chimento, Luis Pascual; Forte, Mónica; Lazkoz, Ruth; Dark matter to dark energy transition in k-essence cosmologies; World Scientific; Modern Physics Letters A: Particles and Fields; Gravitation; Cosmology and Nuclear Physics; 20; 27; 12-2005; 2075-20820217-7323CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1142/S0217732305018074info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:05:51Zoai:ri.conicet.gov.ar:11336/74245instacron: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:34982025-09-03 10:05:51.909CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dark matter to dark energy transition in k-essence cosmologies
title Dark matter to dark energy transition in k-essence cosmologies
spellingShingle Dark matter to dark energy transition in k-essence cosmologies
Chimento, Luis Pascual
Dark Energy
Dark Matter
K-Essence
title_short Dark matter to dark energy transition in k-essence cosmologies
title_full Dark matter to dark energy transition in k-essence cosmologies
title_fullStr Dark matter to dark energy transition in k-essence cosmologies
title_full_unstemmed Dark matter to dark energy transition in k-essence cosmologies
title_sort Dark matter to dark energy transition in k-essence cosmologies
dc.creator.none.fl_str_mv Chimento, Luis Pascual
Forte, Mónica
Lazkoz, Ruth
author Chimento, Luis Pascual
author_facet Chimento, Luis Pascual
Forte, Mónica
Lazkoz, Ruth
author_role author
author2 Forte, Mónica
Lazkoz, Ruth
author2_role author
author
dc.subject.none.fl_str_mv Dark Energy
Dark Matter
K-Essence
topic Dark Energy
Dark Matter
K-Essence
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 implement the transition from dark matter to dark energy in k-essence cosmologies for a very large set of kinetic functions F, in a way alternative to recent proposals which use generalized Chaplygin gas and transient models. Here we require that the pressure admits a power-law expansion around some value of the kinetic energy where the pressure vanishes. In addition, for suitable values of the parameters of the model, the speed of sound of the dark matter will be low. We first present the discussion in fairly general terms, and later consider for illustration two examples. © World Scientific Publishing Company.
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: Forte, Mónica. Facultad de Ciencias Exactas y Naturales; Argentina
Fil: Lazkoz, Ruth. Universidad del Pais Vasco - Euskal Herriko Unibertsitatea, Campus Bizkaia; España
description We implement the transition from dark matter to dark energy in k-essence cosmologies for a very large set of kinetic functions F, in a way alternative to recent proposals which use generalized Chaplygin gas and transient models. Here we require that the pressure admits a power-law expansion around some value of the kinetic energy where the pressure vanishes. In addition, for suitable values of the parameters of the model, the speed of sound of the dark matter will be low. We first present the discussion in fairly general terms, and later consider for illustration two examples. © World Scientific Publishing Company.
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/11336/74245
Chimento, Luis Pascual; Forte, Mónica; Lazkoz, Ruth; Dark matter to dark energy transition in k-essence cosmologies; World Scientific; Modern Physics Letters A: Particles and Fields; Gravitation; Cosmology and Nuclear Physics; 20; 27; 12-2005; 2075-2082
0217-7323
CONICET Digital
CONICET
url http://hdl.handle.net/11336/74245
identifier_str_mv Chimento, Luis Pascual; Forte, Mónica; Lazkoz, Ruth; Dark matter to dark energy transition in k-essence cosmologies; World Scientific; Modern Physics Letters A: Particles and Fields; Gravitation; Cosmology and Nuclear Physics; 20; 27; 12-2005; 2075-2082
0217-7323
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1142/S0217732305018074
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv World Scientific
publisher.none.fl_str_mv World Scientific
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_ 1842269931888967680
score 13.13397

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