Coupled dark matter-dark energy in light of near Universe observations

Cosmological analysis based on currently available observations are unable to rule out a sizeable coupling among the dark energy and dark matter fluids. We explore a variety of coupled dark matter-dark energy models, which satisfy cosmic microwave background constraints, in light of low redshift and...

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Detalles Bibliográficos
Autores: López Honorez, Laura, Reid, Beth A., Mena, Olga, Verde, Licia, Jiménez, Raúl (Jiménez Tellado)
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2010
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/127511
Acceso en línea:https://hdl.handle.net/2445/127511
Access Level:acceso abierto
Palabra clave:Matèria fosca (Astronomia)
Energia fosca (Astronomia)
Cosmologia
Dark matter (Astronomy)
Dark energy (Astronomy)
Cosmology
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spelling Coupled dark matter-dark energy in light of near Universe observationsLópez Honorez, LauraReid, Beth A.Mena, OlgaVerde, LiciaJiménez, Raúl (Jiménez Tellado)Matèria fosca (Astronomia)Energia fosca (Astronomia)CosmologiaDark matter (Astronomy)Dark energy (Astronomy)CosmologyCosmological analysis based on currently available observations are unable to rule out a sizeable coupling among the dark energy and dark matter fluids. We explore a variety of coupled dark matter-dark energy models, which satisfy cosmic microwave background constraints, in light of low redshift and near universe observations. We illustrate the phenomenology of different classes of dark coupling models, paying particular attention in distinguishing between effects that appear only on the expansion history and those that appear in the growth of structure. We find that while a broad class of dark coupling models are effectively models where general relativity (GR) is modified and thus can be probed by a combination of tests for the expansion history and the growth of structure , there is a class of dark coupling models where gravity is still GR, but the growth of perturbations is, in principle modified. While this effect is small in the specific models we have considered, one should bear in mind that an inconsistency between reconstructed expansion history and growth may not uniquely indicate deviations from GR. Our low redshift constraints arise from cosmic velocities, redshift space distortions and dark matter abundance in galaxy voids. We find that current data constrain the dimensionless coupling to be |ξ| < 0.2, but prospects from forthcoming data are for a significant improvement. Future, precise measurements of the Hubble constant, combined with high-precision constraints on the growth of structure, could provide the key to rule out dark coupling models which survive other tests. We shall exploit as well weak equivalence principle violation arguments, which have the potential to highly disfavour a broad family of coupled models.Institute of Physics (IOP)2019201920102019info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion38 p.application/pdfapplication/pdfhttps://hdl.handle.net/2445/127511Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1088/1475-7516/2010/09/029Journal of Cosmology and Astroparticle Physics, 2010, vol. 2010, num. 029https://doi.org/10.1088/1475-7516/2010/09/029info:eu-repo/grantAgreement/EC/FP7/240117info:eu-repo/grantAgreement/EC/FP7/237920info:eu-repo/grantAgreement/EC/FP7/202182(c) IOP Publishing and Sissa Medialab, 2010info:eu-repo/semantics/openAccessoai:recercat.cat:2445/1275112026-05-29T05:05:01Z
dc.title.none.fl_str_mv Coupled dark matter-dark energy in light of near Universe observations
title Coupled dark matter-dark energy in light of near Universe observations
spellingShingle Coupled dark matter-dark energy in light of near Universe observations
López Honorez, Laura
Matèria fosca (Astronomia)
Energia fosca (Astronomia)
Cosmologia
Dark matter (Astronomy)
Dark energy (Astronomy)
Cosmology
title_short Coupled dark matter-dark energy in light of near Universe observations
title_full Coupled dark matter-dark energy in light of near Universe observations
title_fullStr Coupled dark matter-dark energy in light of near Universe observations
title_full_unstemmed Coupled dark matter-dark energy in light of near Universe observations
title_sort Coupled dark matter-dark energy in light of near Universe observations
dc.creator.none.fl_str_mv López Honorez, Laura
Reid, Beth A.
Mena, Olga
Verde, Licia
Jiménez, Raúl (Jiménez Tellado)
author López Honorez, Laura
author_facet López Honorez, Laura
Reid, Beth A.
Mena, Olga
Verde, Licia
Jiménez, Raúl (Jiménez Tellado)
author_role author
author2 Reid, Beth A.
Mena, Olga
Verde, Licia
Jiménez, Raúl (Jiménez Tellado)
author2_role author
author
author
author
dc.subject.none.fl_str_mv Matèria fosca (Astronomia)
Energia fosca (Astronomia)
Cosmologia
Dark matter (Astronomy)
Dark energy (Astronomy)
Cosmology
topic Matèria fosca (Astronomia)
Energia fosca (Astronomia)
Cosmologia
Dark matter (Astronomy)
Dark energy (Astronomy)
Cosmology
description Cosmological analysis based on currently available observations are unable to rule out a sizeable coupling among the dark energy and dark matter fluids. We explore a variety of coupled dark matter-dark energy models, which satisfy cosmic microwave background constraints, in light of low redshift and near universe observations. We illustrate the phenomenology of different classes of dark coupling models, paying particular attention in distinguishing between effects that appear only on the expansion history and those that appear in the growth of structure. We find that while a broad class of dark coupling models are effectively models where general relativity (GR) is modified and thus can be probed by a combination of tests for the expansion history and the growth of structure , there is a class of dark coupling models where gravity is still GR, but the growth of perturbations is, in principle modified. While this effect is small in the specific models we have considered, one should bear in mind that an inconsistency between reconstructed expansion history and growth may not uniquely indicate deviations from GR. Our low redshift constraints arise from cosmic velocities, redshift space distortions and dark matter abundance in galaxy voids. We find that current data constrain the dimensionless coupling to be |ξ| < 0.2, but prospects from forthcoming data are for a significant improvement. Future, precise measurements of the Hubble constant, combined with high-precision constraints on the growth of structure, could provide the key to rule out dark coupling models which survive other tests. We shall exploit as well weak equivalence principle violation arguments, which have the potential to highly disfavour a broad family of coupled models.
publishDate 2010
dc.date.none.fl_str_mv 2010
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/127511
url https://hdl.handle.net/2445/127511
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1088/1475-7516/2010/09/029
Journal of Cosmology and Astroparticle Physics, 2010, vol. 2010, num. 029
https://doi.org/10.1088/1475-7516/2010/09/029
info:eu-repo/grantAgreement/EC/FP7/240117
info:eu-repo/grantAgreement/EC/FP7/237920
info:eu-repo/grantAgreement/EC/FP7/202182
dc.rights.none.fl_str_mv (c) IOP Publishing and Sissa Medialab, 2010
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) IOP Publishing and Sissa Medialab, 2010
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 38 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Institute of Physics (IOP)
publisher.none.fl_str_mv Institute of Physics (IOP)
dc.source.none.fl_str_mv Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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