Stringy Running Vacuum Model and current Tensions in Cosmology

We discuss the potential alleviation of both the Hubble and the growth of galactic structure data tensions observed in the current epoch of cosmology in the context of the so-called stringy running vacuum model (RVM) of cosmology. This is a gravitational field theory coupled to matter, which, at ear...

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Autores: Gómez Valent, Adrià, Mavromatos, Nikolaos, Solà Peracaula, Joan
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
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:2445/213148
Acceso en línea:https://hdl.handle.net/2445/213148
Access Level:acceso abierto
Palabra clave:Cosmologia
Energia fosca (Astronomia)
Matèria fosca (Astronomia)
Cosmology
Dark energy (Astronomy)
Dark matter (Astronomy)
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spelling Stringy Running Vacuum Model and current Tensions in CosmologyGómez Valent, AdriàMavromatos, NikolaosSolà Peracaula, JoanCosmologiaEnergia fosca (Astronomia)Matèria fosca (Astronomia)CosmologyDark energy (Astronomy)Dark matter (Astronomy)We discuss the potential alleviation of both the Hubble and the growth of galactic structure data tensions observed in the current epoch of cosmology in the context of the so-called stringy running vacuum model (RVM) of cosmology. This is a gravitational field theory coupled to matter, which, at early eras, contains gravitational (Chern–Simons (CS) type) anomalies and torsion, arising from the fundamental degrees of freedom of the massless gravitational multiplet of an underlying microscopic string theory. The model leads to RVM type inflation without external inflatons, arising from the quartic powers of the Hubble parameter that characterize the vacuum energy density due to primordial-gravitational-wave-induced anomaly CS condensates, and dominate the inflationary era. In modern eras, of relevance to this work, the gravitational anomalies are cancelled by chiral matter, generated at the end of the RVM inflationary era, but cosmic radiation and other matter fields are still responsible for a RVM energy density with terms exhibiting a quadratic-power-of-Hubble-parameter dependence, but also products of the latter with logarithmic H-dependencies, arising from potential quantum-gravity and quantum-matter loop effects. In this work, such terms are examined phenomenologically from the point of view of the potential alleviation of the aforementioned current tensions in cosmology. Using standard information criteria, we find that these tensions can be substantially alleviated in a way consistent not only with the data, but also with the underlying microscopic theory predictions, associated with the primordial dynamical breaking of supergravity that characterize a pre-RVM-inflationary phase of the model.Institute of Physics (IOP)2024202420232024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion49 p.application/pdfhttps://hdl.handle.net/2445/213148Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.1088/1361-6382/ad0fb8Classical and Quantum Gravity, 2023, vol. 41, num.1, p. 1-49https://doi.org/10.1088/1361-6382/ad0fb8cc-by-nc-nd (c) Gómez Valent, Adrià, et al., 2023http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2131482026-05-29T05:05:01Z
dc.title.none.fl_str_mv Stringy Running Vacuum Model and current Tensions in Cosmology
title Stringy Running Vacuum Model and current Tensions in Cosmology
spellingShingle Stringy Running Vacuum Model and current Tensions in Cosmology
Gómez Valent, Adrià
Cosmologia
Energia fosca (Astronomia)
Matèria fosca (Astronomia)
Cosmology
Dark energy (Astronomy)
Dark matter (Astronomy)
title_short Stringy Running Vacuum Model and current Tensions in Cosmology
title_full Stringy Running Vacuum Model and current Tensions in Cosmology
title_fullStr Stringy Running Vacuum Model and current Tensions in Cosmology
title_full_unstemmed Stringy Running Vacuum Model and current Tensions in Cosmology
title_sort Stringy Running Vacuum Model and current Tensions in Cosmology
dc.creator.none.fl_str_mv Gómez Valent, Adrià
Mavromatos, Nikolaos
Solà Peracaula, Joan
author Gómez Valent, Adrià
author_facet Gómez Valent, Adrià
Mavromatos, Nikolaos
Solà Peracaula, Joan
author_role author
author2 Mavromatos, Nikolaos
Solà Peracaula, Joan
author2_role author
author
dc.subject.none.fl_str_mv Cosmologia
Energia fosca (Astronomia)
Matèria fosca (Astronomia)
Cosmology
Dark energy (Astronomy)
Dark matter (Astronomy)
topic Cosmologia
Energia fosca (Astronomia)
Matèria fosca (Astronomia)
Cosmology
Dark energy (Astronomy)
Dark matter (Astronomy)
description We discuss the potential alleviation of both the Hubble and the growth of galactic structure data tensions observed in the current epoch of cosmology in the context of the so-called stringy running vacuum model (RVM) of cosmology. This is a gravitational field theory coupled to matter, which, at early eras, contains gravitational (Chern–Simons (CS) type) anomalies and torsion, arising from the fundamental degrees of freedom of the massless gravitational multiplet of an underlying microscopic string theory. The model leads to RVM type inflation without external inflatons, arising from the quartic powers of the Hubble parameter that characterize the vacuum energy density due to primordial-gravitational-wave-induced anomaly CS condensates, and dominate the inflationary era. In modern eras, of relevance to this work, the gravitational anomalies are cancelled by chiral matter, generated at the end of the RVM inflationary era, but cosmic radiation and other matter fields are still responsible for a RVM energy density with terms exhibiting a quadratic-power-of-Hubble-parameter dependence, but also products of the latter with logarithmic H-dependencies, arising from potential quantum-gravity and quantum-matter loop effects. In this work, such terms are examined phenomenologically from the point of view of the potential alleviation of the aforementioned current tensions in cosmology. Using standard information criteria, we find that these tensions can be substantially alleviated in a way consistent not only with the data, but also with the underlying microscopic theory predictions, associated with the primordial dynamical breaking of supergravity that characterize a pre-RVM-inflationary phase of the model.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/213148
url https://hdl.handle.net/2445/213148
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1088/1361-6382/ad0fb8
Classical and Quantum Gravity, 2023, vol. 41, num.1, p. 1-49
https://doi.org/10.1088/1361-6382/ad0fb8
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Gómez Valent, Adrià, et al., 2023
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Gómez Valent, Adrià, et al., 2023
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 49 p.
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 (Física Quàntica i Astrofísica)
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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