Gaussian processes reconstruction of the dark energy potential

Detalhes bibliográficos
Autor(a) principal: Jesus, J. [UNESP]
Data de Publicação: 2022
Outros Autores: Valentim, R., Escobal, A. [UNESP], Pereira, S. [UNESP], Benndorf, D. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1088/1475-7516/2022/11/037
http://hdl.handle.net/11449/247933
Resumo: Scalar Fields (SF) have emerged as natural candidates for dark energy as quintessential or phantom fields, as they are the main ingredient of inflation theories. Instead of assuming some form for the scalar field potential, however, this work reconstructs the SF potential directly from observational data, namely, Hubble and SNe Ia data. We show that two popular forms for the SF potentials, namely, the power-law and the quadratic free-field, are compatible with the reconstructions thus obtained, at least for some choices of the priors of the matter density and curvature parameters and for some redshift intervals.
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spelling Gaussian processes reconstruction of the dark energy potentialdark energy theoryStatistical sampling techniquesScalar Fields (SF) have emerged as natural candidates for dark energy as quintessential or phantom fields, as they are the main ingredient of inflation theories. Instead of assuming some form for the scalar field potential, however, this work reconstructs the SF potential directly from observational data, namely, Hubble and SNe Ia data. We show that two popular forms for the SF potentials, namely, the power-law and the quadratic free-field, are compatible with the reconstructions thus obtained, at least for some choices of the priors of the matter density and curvature parameters and for some redshift intervals.Instituto de Ciências e Engenharia Universidade Estadual Paulista (UNESP), R. Geraldo Alckmin, 519 SPDepartamento de Física Faculdade de Engenharia e Ciências de Guaratinguetá Universidade Estadual Paulista (UNESP), Av. Dr. Ariberto Pereira da Cunha 333 SPDepartamento de Física Instituto de Ciências Ambientais Químicas e Farmacêuticas (ICAQF) Universidade Federal de São Paulo (UNIFESP), Rua São Nicolau 210 SPInstituto de Ciências e Engenharia Universidade Estadual Paulista (UNESP), R. Geraldo Alckmin, 519 SPDepartamento de Física Faculdade de Engenharia e Ciências de Guaratinguetá Universidade Estadual Paulista (UNESP), Av. Dr. Ariberto Pereira da Cunha 333 SPUniversidade Estadual Paulista (UNESP)Universidade Federal de São Paulo (UNIFESP)Jesus, J. [UNESP]Valentim, R.Escobal, A. [UNESP]Pereira, S. [UNESP]Benndorf, D. [UNESP]2023-07-29T13:29:50Z2023-07-29T13:29:50Z2022-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1088/1475-7516/2022/11/037Journal of Cosmology and Astroparticle Physics, v. 2022, n. 11, 2022.1475-7516http://hdl.handle.net/11449/24793310.1088/1475-7516/2022/11/0372-s2.0-85142433539Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Cosmology and Astroparticle Physicsinfo:eu-repo/semantics/openAccess2024-07-01T20:52:16Zoai:repositorio.unesp.br:11449/247933Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:24:13.940830Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Gaussian processes reconstruction of the dark energy potential
title Gaussian processes reconstruction of the dark energy potential
spellingShingle Gaussian processes reconstruction of the dark energy potential
Jesus, J. [UNESP]
dark energy theory
Statistical sampling techniques
title_short Gaussian processes reconstruction of the dark energy potential
title_full Gaussian processes reconstruction of the dark energy potential
title_fullStr Gaussian processes reconstruction of the dark energy potential
title_full_unstemmed Gaussian processes reconstruction of the dark energy potential
title_sort Gaussian processes reconstruction of the dark energy potential
author Jesus, J. [UNESP]
author_facet Jesus, J. [UNESP]
Valentim, R.
Escobal, A. [UNESP]
Pereira, S. [UNESP]
Benndorf, D. [UNESP]
author_role author
author2 Valentim, R.
Escobal, A. [UNESP]
Pereira, S. [UNESP]
Benndorf, D. [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Federal de São Paulo (UNIFESP)
dc.contributor.author.fl_str_mv Jesus, J. [UNESP]
Valentim, R.
Escobal, A. [UNESP]
Pereira, S. [UNESP]
Benndorf, D. [UNESP]
dc.subject.por.fl_str_mv dark energy theory
Statistical sampling techniques
topic dark energy theory
Statistical sampling techniques
description Scalar Fields (SF) have emerged as natural candidates for dark energy as quintessential or phantom fields, as they are the main ingredient of inflation theories. Instead of assuming some form for the scalar field potential, however, this work reconstructs the SF potential directly from observational data, namely, Hubble and SNe Ia data. We show that two popular forms for the SF potentials, namely, the power-law and the quadratic free-field, are compatible with the reconstructions thus obtained, at least for some choices of the priors of the matter density and curvature parameters and for some redshift intervals.
publishDate 2022
dc.date.none.fl_str_mv 2022-11-01
2023-07-29T13:29:50Z
2023-07-29T13:29:50Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1088/1475-7516/2022/11/037
Journal of Cosmology and Astroparticle Physics, v. 2022, n. 11, 2022.
1475-7516
http://hdl.handle.net/11449/247933
10.1088/1475-7516/2022/11/037
2-s2.0-85142433539
url http://dx.doi.org/10.1088/1475-7516/2022/11/037
http://hdl.handle.net/11449/247933
identifier_str_mv Journal of Cosmology and Astroparticle Physics, v. 2022, n. 11, 2022.
1475-7516
10.1088/1475-7516/2022/11/037
2-s2.0-85142433539
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Cosmology and Astroparticle Physics
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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