Big brake singularity is accommodated as an exotic quintessence field

Autores
Chimento, Luis Pascual; Richarte, Martín Gustavo
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We describe a big brake singularity in terms of a modified Chaplygin gas equation of state $p=(ga_{m}-1)ho+alga_{m}ho^{-n}$, accommodate this late-time event as an exotic quintessence model obtained from an energy-momentum tensor, and focus on the cosmological behavior of the exotic field, its kinetic energy and the potential energy. At the background level, the exotic field does not blow up whereas its kinetic energy and potential both grow without limit near the future singularity. We evaluate the classical stability of this background solution by examining the scalar perturbations of the metric along with the inclusion of entropy perturbation in the perturbed pressure. Within the Newtonian gauge, the gravitational field approaches a constant near the singularity plus additional regular terms. When the perturbed exotic field is associated with $al>0$ the perturbed pressure and contrast density both diverge, whereas the perturbed exotic field and the divergence of the exotic field´s velocity go to zero exponentially. When the perturbed exotic field is associated with $al<0$ the contrast density always blows up, but the perturbed pressure can remain bounded. In addition, the perturbed exotic field and the divergence of the exotic field´s velocity vanish near the big brake singularity. We also briefly look at the behavior of the intrinsic entropy perturbation near the singular event.
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. Universidad del Bio Bio; Chile
Fil: Richarte, Martín Gustavo. 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. Universidad Federal de Paraná; Brasil
Materia
Big Brake Singularity
Exotic Quintessence1
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:11336/44537

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spelling Big brake singularity is accommodated as an exotic quintessence fieldChimento, Luis PascualRicharte, Martín GustavoBig Brake SingularityExotic Quintessence1https://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We describe a big brake singularity in terms of a modified Chaplygin gas equation of state $p=(ga_{m}-1)ho+alga_{m}ho^{-n}$, accommodate this late-time event as an exotic quintessence model obtained from an energy-momentum tensor, and focus on the cosmological behavior of the exotic field, its kinetic energy and the potential energy. At the background level, the exotic field does not blow up whereas its kinetic energy and potential both grow without limit near the future singularity. We evaluate the classical stability of this background solution by examining the scalar perturbations of the metric along with the inclusion of entropy perturbation in the perturbed pressure. Within the Newtonian gauge, the gravitational field approaches a constant near the singularity plus additional regular terms. When the perturbed exotic field is associated with $al>0$ the perturbed pressure and contrast density both diverge, whereas the perturbed exotic field and the divergence of the exotic field´s velocity go to zero exponentially. When the perturbed exotic field is associated with $al<0$ the contrast density always blows up, but the perturbed pressure can remain bounded. In addition, the perturbed exotic field and the divergence of the exotic field´s velocity vanish near the big brake singularity. We also briefly look at the behavior of the intrinsic entropy perturbation near the singular event.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. Universidad del Bio Bio; ChileFil: Richarte, Martín Gustavo. 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. Universidad Federal de Paraná; BrasilAmerican Physical Society2015-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/44537Chimento, Luis Pascual; Richarte, Martín Gustavo; Big brake singularity is accommodated as an exotic quintessence field; American Physical Society; Physical Review D; 93; 4; 8-2015; 1-100556-2821CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.93.043524info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.043524info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:07:47Zoai:ri.conicet.gov.ar:11336/44537instacron: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:34982025-09-29 10:07:47.755CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Big brake singularity is accommodated as an exotic quintessence field
title Big brake singularity is accommodated as an exotic quintessence field
spellingShingle Big brake singularity is accommodated as an exotic quintessence field
Chimento, Luis Pascual
Big Brake Singularity
Exotic Quintessence1
title_short Big brake singularity is accommodated as an exotic quintessence field
title_full Big brake singularity is accommodated as an exotic quintessence field
title_fullStr Big brake singularity is accommodated as an exotic quintessence field
title_full_unstemmed Big brake singularity is accommodated as an exotic quintessence field
title_sort Big brake singularity is accommodated as an exotic quintessence field
dc.creator.none.fl_str_mv Chimento, Luis Pascual
Richarte, Martín Gustavo
author Chimento, Luis Pascual
author_facet Chimento, Luis Pascual
Richarte, Martín Gustavo
author_role author
author2 Richarte, Martín Gustavo
author2_role author
dc.subject.none.fl_str_mv Big Brake Singularity
Exotic Quintessence1
topic Big Brake Singularity
Exotic Quintessence1
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 describe a big brake singularity in terms of a modified Chaplygin gas equation of state $p=(ga_{m}-1)ho+alga_{m}ho^{-n}$, accommodate this late-time event as an exotic quintessence model obtained from an energy-momentum tensor, and focus on the cosmological behavior of the exotic field, its kinetic energy and the potential energy. At the background level, the exotic field does not blow up whereas its kinetic energy and potential both grow without limit near the future singularity. We evaluate the classical stability of this background solution by examining the scalar perturbations of the metric along with the inclusion of entropy perturbation in the perturbed pressure. Within the Newtonian gauge, the gravitational field approaches a constant near the singularity plus additional regular terms. When the perturbed exotic field is associated with $al>0$ the perturbed pressure and contrast density both diverge, whereas the perturbed exotic field and the divergence of the exotic field´s velocity go to zero exponentially. When the perturbed exotic field is associated with $al<0$ the contrast density always blows up, but the perturbed pressure can remain bounded. In addition, the perturbed exotic field and the divergence of the exotic field´s velocity vanish near the big brake singularity. We also briefly look at the behavior of the intrinsic entropy perturbation near the singular event.
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. Universidad del Bio Bio; Chile
Fil: Richarte, Martín Gustavo. 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. Universidad Federal de Paraná; Brasil
description We describe a big brake singularity in terms of a modified Chaplygin gas equation of state $p=(ga_{m}-1)ho+alga_{m}ho^{-n}$, accommodate this late-time event as an exotic quintessence model obtained from an energy-momentum tensor, and focus on the cosmological behavior of the exotic field, its kinetic energy and the potential energy. At the background level, the exotic field does not blow up whereas its kinetic energy and potential both grow without limit near the future singularity. We evaluate the classical stability of this background solution by examining the scalar perturbations of the metric along with the inclusion of entropy perturbation in the perturbed pressure. Within the Newtonian gauge, the gravitational field approaches a constant near the singularity plus additional regular terms. When the perturbed exotic field is associated with $al>0$ the perturbed pressure and contrast density both diverge, whereas the perturbed exotic field and the divergence of the exotic field´s velocity go to zero exponentially. When the perturbed exotic field is associated with $al<0$ the contrast density always blows up, but the perturbed pressure can remain bounded. In addition, the perturbed exotic field and the divergence of the exotic field´s velocity vanish near the big brake singularity. We also briefly look at the behavior of the intrinsic entropy perturbation near the singular event.
publishDate 2015
dc.date.none.fl_str_mv 2015-08
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/11336/44537
Chimento, Luis Pascual; Richarte, Martín Gustavo; Big brake singularity is accommodated as an exotic quintessence field; American Physical Society; Physical Review D; 93; 4; 8-2015; 1-10
0556-2821
CONICET Digital
CONICET
url http://hdl.handle.net/11336/44537
identifier_str_mv Chimento, Luis Pascual; Richarte, Martín Gustavo; Big brake singularity is accommodated as an exotic quintessence field; American Physical Society; Physical Review D; 93; 4; 8-2015; 1-10
0556-2821
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.93.043524
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.043524
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 American Physical Society
publisher.none.fl_str_mv American Physical Society
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
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