The impact of particle production on gravitational baryogenesis

Detalhes bibliográficos
Autor(a) principal: Lima, J. A.S.
Data de Publicação: 2016
Outros Autores: Singleton, D. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.physletb.2016.10.005
http://hdl.handle.net/11449/169064
Resumo: Baryogenesis driven by curvature effects is investigated by taking into account gravitationally induced particle production in the very early Universe. In our scenario, the baryon asymmetry is generated dynamically during an inflationary epoch powered by ultra-relativistic particles. The adiabatic particle production rate provides both the needed negative pressure to accelerate the radiation dominated Universe and a non-zero chemical potential which distinguishes baryons and anti-baryons thereby producing a baryon asymmetry in agreement with the observed value. Reciprocally, the present day asymmetry may be used to determine the inflationary scale at early times. Successful gravitational baryogenesis is dynamically generated for many different choices of the relevant model parameters.
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spelling The impact of particle production on gravitational baryogenesisBaryogenesis driven by curvature effects is investigated by taking into account gravitationally induced particle production in the very early Universe. In our scenario, the baryon asymmetry is generated dynamically during an inflationary epoch powered by ultra-relativistic particles. The adiabatic particle production rate provides both the needed negative pressure to accelerate the radiation dominated Universe and a non-zero chemical potential which distinguishes baryons and anti-baryons thereby producing a baryon asymmetry in agreement with the observed value. Reciprocally, the present day asymmetry may be used to determine the inflationary scale at early times. Successful gravitational baryogenesis is dynamically generated for many different choices of the relevant model parameters.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Ministério da Educação e CiênciaDepartamento de Astronomia Universidade de São Paulo, Rua do Matão 1226Department of Physics California State University FresnoICTP South American Institute for Fundamental Research UNESP – Univ. Estadual Paulista, Rua Dr. Bento T. Ferraz 271Institute of Experimental and Theoretical Physics Al-Farabi KazNUICTP South American Institute for Fundamental Research UNESP – Univ. Estadual Paulista, Rua Dr. Bento T. Ferraz 271FAPESP: 11/51676-9CNPq: 3105402014-3CAPES: 88881.068485/2014Universidade de São Paulo (USP)California State University FresnoUniversidade Estadual Paulista (Unesp)Institute of Experimental and Theoretical Physics Al-Farabi KazNULima, J. A.S.Singleton, D. [UNESP]2018-12-11T16:44:11Z2018-12-11T16:44:11Z2016-11-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article506-511application/pdfhttp://dx.doi.org/10.1016/j.physletb.2016.10.005Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 762, p. 506-511.0370-2693http://hdl.handle.net/11449/16906410.1016/j.physletb.2016.10.0052-s2.0-849925155332-s2.0-84992515533.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics2,336info:eu-repo/semantics/openAccess2023-12-08T06:18:02Zoai:repositorio.unesp.br:11449/169064Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:45:29.280123Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv The impact of particle production on gravitational baryogenesis
title The impact of particle production on gravitational baryogenesis
spellingShingle The impact of particle production on gravitational baryogenesis
Lima, J. A.S.
title_short The impact of particle production on gravitational baryogenesis
title_full The impact of particle production on gravitational baryogenesis
title_fullStr The impact of particle production on gravitational baryogenesis
title_full_unstemmed The impact of particle production on gravitational baryogenesis
title_sort The impact of particle production on gravitational baryogenesis
author Lima, J. A.S.
author_facet Lima, J. A.S.
Singleton, D. [UNESP]
author_role author
author2 Singleton, D. [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade de São Paulo (USP)
California State University Fresno
Universidade Estadual Paulista (Unesp)
Institute of Experimental and Theoretical Physics Al-Farabi KazNU
dc.contributor.author.fl_str_mv Lima, J. A.S.
Singleton, D. [UNESP]
description Baryogenesis driven by curvature effects is investigated by taking into account gravitationally induced particle production in the very early Universe. In our scenario, the baryon asymmetry is generated dynamically during an inflationary epoch powered by ultra-relativistic particles. The adiabatic particle production rate provides both the needed negative pressure to accelerate the radiation dominated Universe and a non-zero chemical potential which distinguishes baryons and anti-baryons thereby producing a baryon asymmetry in agreement with the observed value. Reciprocally, the present day asymmetry may be used to determine the inflationary scale at early times. Successful gravitational baryogenesis is dynamically generated for many different choices of the relevant model parameters.
publishDate 2016
dc.date.none.fl_str_mv 2016-11-10
2018-12-11T16:44:11Z
2018-12-11T16:44:11Z
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/10.1016/j.physletb.2016.10.005
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 762, p. 506-511.
0370-2693
http://hdl.handle.net/11449/169064
10.1016/j.physletb.2016.10.005
2-s2.0-84992515533
2-s2.0-84992515533.pdf
url http://dx.doi.org/10.1016/j.physletb.2016.10.005
http://hdl.handle.net/11449/169064
identifier_str_mv Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 762, p. 506-511.
0370-2693
10.1016/j.physletb.2016.10.005
2-s2.0-84992515533
2-s2.0-84992515533.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
2,336
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 506-511
application/pdf
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
_version_ 1808129114181206016

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