Multi-field TDiff theories for cosmology

We consider theories which break the invariance under diffeomorphisms (Diff) down to transverse diffeomorphisms (TDiff) in the matter sector, consisting of multiple scalar fields. In particular, we regard shift-symmetric models with two free TDiff scalar fields in a flat Robertson-Walker spacetime (...

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Detalles Bibliográficos
Autores: Tessainer, Diego, López Maroto, Antonio, Martín Moruno, María Del Prado
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/128414
Acceso en línea:https://hdl.handle.net/20.500.14352/128414
Access Level:acceso abierto
Palabra clave:53
524.8
530.145
Cosmology
Scalar fields
Shift-symmetry
Transverse diffeomorphisms
Dark energy
Interacting dark sector
Física (Física)
Teoría de los quanta
2212 Física Teórica
2101 Cosmología y Cosmogonía
2212.14 Teoría de la Relatividad
id ES_fc1cc47bf85b0e862f2b924b81f0cdb2
oai_identifier_str oai:docta.ucm.es:20.500.14352/128414
network_acronym_str ES
network_name_str España
repository_id_str
spelling Multi-field TDiff theories for cosmologyTessainer, DiegoLópez Maroto, AntonioMartín Moruno, María Del Prado53524.8530.145CosmologyScalar fieldsShift-symmetryTransverse diffeomorphismsDark energyInteracting dark sectorFísica (Física)Teoría de los quanta2212 Física Teórica2101 Cosmología y Cosmogonía2212.14 Teoría de la RelatividadWe consider theories which break the invariance under diffeomorphisms (Diff) down to transverse diffeomorphisms (TDiff) in the matter sector, consisting of multiple scalar fields. In particular, we regard shift-symmetric models with two free TDiff scalar fields in a flat Robertson-Walker spacetime (FLRW) and use the perfect fluid approach to study their dynamics. As a consequence of the symmetry breaking, an effective interaction between the fields is induced from the conservation of the total energy–momentum tensor, without the necessity to introduce any explicit interacting term in the Lagrangian. We study the different single-field domination regimes and analyze the energy exchange between the fields. Thereupon, we introduce an application of these models for the description of interactions in the dark sector, and compare the theoretical predictions of our model to observational data from Type Ia supernovae.ElsevierUniversidad Complutense de Madrid20252025-02-0120252025-02-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/128414reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2022-138263NB-I00 COSMOLOGIA Y GRAVITACION DEL SECTOR OSCUROopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/1284142026-06-02T12:44:21Z
dc.title.none.fl_str_mv Multi-field TDiff theories for cosmology
title Multi-field TDiff theories for cosmology
spellingShingle Multi-field TDiff theories for cosmology
Tessainer, Diego
53
524.8
530.145
Cosmology
Scalar fields
Shift-symmetry
Transverse diffeomorphisms
Dark energy
Interacting dark sector
Física (Física)
Teoría de los quanta
2212 Física Teórica
2101 Cosmología y Cosmogonía
2212.14 Teoría de la Relatividad
title_short Multi-field TDiff theories for cosmology
title_full Multi-field TDiff theories for cosmology
title_fullStr Multi-field TDiff theories for cosmology
title_full_unstemmed Multi-field TDiff theories for cosmology
title_sort Multi-field TDiff theories for cosmology
dc.creator.none.fl_str_mv Tessainer, Diego
López Maroto, Antonio
Martín Moruno, María Del Prado
author Tessainer, Diego
author_facet Tessainer, Diego
López Maroto, Antonio
Martín Moruno, María Del Prado
author_role author
author2 López Maroto, Antonio
Martín Moruno, María Del Prado
author2_role author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
524.8
530.145
Cosmology
Scalar fields
Shift-symmetry
Transverse diffeomorphisms
Dark energy
Interacting dark sector
Física (Física)
Teoría de los quanta
2212 Física Teórica
2101 Cosmología y Cosmogonía
2212.14 Teoría de la Relatividad
topic 53
524.8
530.145
Cosmology
Scalar fields
Shift-symmetry
Transverse diffeomorphisms
Dark energy
Interacting dark sector
Física (Física)
Teoría de los quanta
2212 Física Teórica
2101 Cosmología y Cosmogonía
2212.14 Teoría de la Relatividad
description We consider theories which break the invariance under diffeomorphisms (Diff) down to transverse diffeomorphisms (TDiff) in the matter sector, consisting of multiple scalar fields. In particular, we regard shift-symmetric models with two free TDiff scalar fields in a flat Robertson-Walker spacetime (FLRW) and use the perfect fluid approach to study their dynamics. As a consequence of the symmetry breaking, an effective interaction between the fields is induced from the conservation of the total energy–momentum tensor, without the necessity to introduce any explicit interacting term in the Lagrangian. We study the different single-field domination regimes and analyze the energy exchange between the fields. Thereupon, we introduce an application of these models for the description of interactions in the dark sector, and compare the theoretical predictions of our model to observational data from Type Ia supernovae.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-02-01
2025
2025-02-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/128414
url https://hdl.handle.net/20.500.14352/128414
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2022-138263NB-I00 COSMOLOGIA Y GRAVITACION DEL SECTOR OSCURO
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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