Inflation without inflaton: a model for dark energy

Autores
Falomir, Horacio Alberto; Gamboa, J.; Méndez, F.; Gondolo, P.
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The interaction between two initially causally disconnected regions of the Universe is studied using analogies of noncommutative quantum mechanics and the deformation of Poisson manifolds. These causally disconnect regions are governed by two independent Friedmann-Lemaître-Robertson-Walker (FLRW) metrics with scale factors a and b and cosmological constants Λa and Λb, respectively. The causality is turned on by positing a nontrivial Poisson bracket [Pα,Pβ]=ϵαβκG, where G is Newton's gravitational constant and κ is a dimensionless parameter. The posited deformed Poisson bracket has an interpretation in terms of 3-cocycles, anomalies, and Poissonian manifolds. The modified FLRW equations acquire an energy-momentum tensor from which we explicitly obtain the equation of state parameter. The modified FLRW equations are solved numerically and the solutions are inflationary or oscillating depending on the values of κ. In this model, the accelerating and decelerating regime may be periodic. The analysis of the equation of state clearly shows the presence of dark energy. By completeness, the perturbative solution for κ << 1 is also studied.
Facultad de Ciencias Exactas
Materia
Física
Ciencias Exactas
Dark energy
Quantum mechanics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/87657
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/87657
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Inflation without inflaton: a model for dark energyFalomir, Horacio AlbertoGamboa, J.Méndez, F.Gondolo, P.FísicaCiencias ExactasDark energyQuantum mechanicsThe interaction between two initially causally disconnected regions of the Universe is studied using analogies of noncommutative quantum mechanics and the deformation of Poisson manifolds. These causally disconnect regions are governed by two independent Friedmann-Lemaître-Robertson-Walker (FLRW) metrics with scale factors a and b and cosmological constants Λ<sub>a</sub> and Λ<sub>b</sub>, respectively. The causality is turned on by positing a nontrivial Poisson bracket [P<sub>α</sub>,Pβ]=ϵαβκG, where G is Newton's gravitational constant and κ is a dimensionless parameter. The posited deformed Poisson bracket has an interpretation in terms of 3-cocycles, anomalies, and Poissonian manifolds. The modified FLRW equations acquire an energy-momentum tensor from which we explicitly obtain the equation of state parameter. The modified FLRW equations are solved numerically and the solutions are inflationary or oscillating depending on the values of κ. In this model, the accelerating and decelerating regime may be periodic. The analysis of the equation of state clearly shows the presence of dark energy. By completeness, the perturbative solution for κ << 1 is also studied.Facultad de Ciencias Exactas2017-10-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/87657enginfo:eu-repo/semantics/altIdentifier/issn/2470-0010info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.96.083534info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:09:06Zoai:sedici.unlp.edu.ar:10915/87657Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:09:06.999SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Inflation without inflaton: a model for dark energy
title Inflation without inflaton: a model for dark energy
spellingShingle Inflation without inflaton: a model for dark energy
Falomir, Horacio Alberto
Física
Ciencias Exactas
Dark energy
Quantum mechanics
title_short Inflation without inflaton: a model for dark energy
title_full Inflation without inflaton: a model for dark energy
title_fullStr Inflation without inflaton: a model for dark energy
title_full_unstemmed Inflation without inflaton: a model for dark energy
title_sort Inflation without inflaton: a model for dark energy
dc.creator.none.fl_str_mv Falomir, Horacio Alberto
Gamboa, J.
Méndez, F.
Gondolo, P.
author Falomir, Horacio Alberto
author_facet Falomir, Horacio Alberto
Gamboa, J.
Méndez, F.
Gondolo, P.
author_role author
author2 Gamboa, J.
Méndez, F.
Gondolo, P.
author2_role author
author
author
dc.subject.none.fl_str_mv Física
Ciencias Exactas
Dark energy
Quantum mechanics
topic Física
Ciencias Exactas
Dark energy
Quantum mechanics
dc.description.none.fl_txt_mv The interaction between two initially causally disconnected regions of the Universe is studied using analogies of noncommutative quantum mechanics and the deformation of Poisson manifolds. These causally disconnect regions are governed by two independent Friedmann-Lemaître-Robertson-Walker (FLRW) metrics with scale factors a and b and cosmological constants Λ<sub>a</sub> and Λ<sub>b</sub>, respectively. The causality is turned on by positing a nontrivial Poisson bracket [P<sub>α</sub>,Pβ]=ϵαβκG, where G is Newton's gravitational constant and κ is a dimensionless parameter. The posited deformed Poisson bracket has an interpretation in terms of 3-cocycles, anomalies, and Poissonian manifolds. The modified FLRW equations acquire an energy-momentum tensor from which we explicitly obtain the equation of state parameter. The modified FLRW equations are solved numerically and the solutions are inflationary or oscillating depending on the values of κ. In this model, the accelerating and decelerating regime may be periodic. The analysis of the equation of state clearly shows the presence of dark energy. By completeness, the perturbative solution for κ << 1 is also studied.
Facultad de Ciencias Exactas
description The interaction between two initially causally disconnected regions of the Universe is studied using analogies of noncommutative quantum mechanics and the deformation of Poisson manifolds. These causally disconnect regions are governed by two independent Friedmann-Lemaître-Robertson-Walker (FLRW) metrics with scale factors a and b and cosmological constants Λ<sub>a</sub> and Λ<sub>b</sub>, respectively. The causality is turned on by positing a nontrivial Poisson bracket [P<sub>α</sub>,Pβ]=ϵαβκG, where G is Newton's gravitational constant and κ is a dimensionless parameter. The posited deformed Poisson bracket has an interpretation in terms of 3-cocycles, anomalies, and Poissonian manifolds. The modified FLRW equations acquire an energy-momentum tensor from which we explicitly obtain the equation of state parameter. The modified FLRW equations are solved numerically and the solutions are inflationary or oscillating depending on the values of κ. In this model, the accelerating and decelerating regime may be periodic. The analysis of the equation of state clearly shows the presence of dark energy. By completeness, the perturbative solution for κ << 1 is also studied.
publishDate 2017
dc.date.none.fl_str_mv 2017-10-31
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/87657
url http://sedici.unlp.edu.ar/handle/10915/87657
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/2470-0010
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.96.083534
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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