Evolution of the universe driven by a mass-dimension-one fermion field
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1209/0295-5075/120/31001 http://hdl.handle.net/11449/175897 |
Resumo: | This paper studies the evolution of the universe filled with a neutral mass-dimension-one fermionic field, sometimes called Elko. The numerical analysis of the coupled system of equations furnishes a scale factor growth and energy density evolution that correctly reproduce the inflationary phase of the universe. After that, assuming a mechanism of energy transference to ordinary matter, the initial conditions generated after inflation drives the radiation-dominated phase and also the subsequent dark-matter evolution, since the Elko field is a good dark-matter candidate. The energy density of the field at the end of inflation, at the end of the radiation phase and for the present time are in agreement with the standard model estimates. The analysis was performed with a potential containing a quadratic mass term plus a quartic self-interaction term, which follows naturally from the theory of mass-dimension-one fermions. Inflation occurs when the field makes a kind of transition around the Planck mass scale. The number of e-foldings during inflation was found to be strongly dependent on the initial conditions of the Elko field, as occurs in chaotic inflationary models. An upper limit to the Elko mass is estimated. A possible interpretation of the inflation as a consequence of a kind of Pauli exclusion principle is presented at the end. |
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Repositório Institucional da UNESP |
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Evolution of the universe driven by a mass-dimension-one fermion fieldThis paper studies the evolution of the universe filled with a neutral mass-dimension-one fermionic field, sometimes called Elko. The numerical analysis of the coupled system of equations furnishes a scale factor growth and energy density evolution that correctly reproduce the inflationary phase of the universe. After that, assuming a mechanism of energy transference to ordinary matter, the initial conditions generated after inflation drives the radiation-dominated phase and also the subsequent dark-matter evolution, since the Elko field is a good dark-matter candidate. The energy density of the field at the end of inflation, at the end of the radiation phase and for the present time are in agreement with the standard model estimates. The analysis was performed with a potential containing a quadratic mass term plus a quartic self-interaction term, which follows naturally from the theory of mass-dimension-one fermions. Inflation occurs when the field makes a kind of transition around the Planck mass scale. The number of e-foldings during inflation was found to be strongly dependent on the initial conditions of the Elko field, as occurs in chaotic inflationary models. An upper limit to the Elko mass is estimated. A possible interpretation of the inflation as a consequence of a kind of Pauli exclusion principle is presented at the end.Universidade Estadual Paulista (Unesp) Faculdade de Engenharia Guaratinguetá Departamento de Física e QuímicaUniversidade Federal de Sergipe Departamento de FísicaUniversidade Federal de Campina Grande Departamento de FísicaUniversidade Estadual Paulista (Unesp) Faculdade de Engenharia Guaratinguetá Departamento de Física e QuímicaUniversidade Estadual Paulista (Unesp)Universidade Federal de Sergipe (UFS)Universidade Federal de Campina GrandePereira, S. H. [UNESP]Holanda, R. F.L.Souza, A. Pinho S. [UNESP]2018-12-11T17:18:02Z2018-12-11T17:18:02Z2017-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1209/0295-5075/120/31001EPL, v. 120, n. 3, 2017.1286-48540295-5075http://hdl.handle.net/11449/17589710.1209/0295-5075/120/310012-s2.0-850421441652-s2.0-85042144165.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEPL0,4980,498info:eu-repo/semantics/openAccess2024-07-01T20:52:27Zoai:repositorio.unesp.br:11449/175897Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:59:56.150290Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Evolution of the universe driven by a mass-dimension-one fermion field |
title |
Evolution of the universe driven by a mass-dimension-one fermion field |
spellingShingle |
Evolution of the universe driven by a mass-dimension-one fermion field Pereira, S. H. [UNESP] |
title_short |
Evolution of the universe driven by a mass-dimension-one fermion field |
title_full |
Evolution of the universe driven by a mass-dimension-one fermion field |
title_fullStr |
Evolution of the universe driven by a mass-dimension-one fermion field |
title_full_unstemmed |
Evolution of the universe driven by a mass-dimension-one fermion field |
title_sort |
Evolution of the universe driven by a mass-dimension-one fermion field |
author |
Pereira, S. H. [UNESP] |
author_facet |
Pereira, S. H. [UNESP] Holanda, R. F.L. Souza, A. Pinho S. [UNESP] |
author_role |
author |
author2 |
Holanda, R. F.L. Souza, A. Pinho S. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Sergipe (UFS) Universidade Federal de Campina Grande |
dc.contributor.author.fl_str_mv |
Pereira, S. H. [UNESP] Holanda, R. F.L. Souza, A. Pinho S. [UNESP] |
description |
This paper studies the evolution of the universe filled with a neutral mass-dimension-one fermionic field, sometimes called Elko. The numerical analysis of the coupled system of equations furnishes a scale factor growth and energy density evolution that correctly reproduce the inflationary phase of the universe. After that, assuming a mechanism of energy transference to ordinary matter, the initial conditions generated after inflation drives the radiation-dominated phase and also the subsequent dark-matter evolution, since the Elko field is a good dark-matter candidate. The energy density of the field at the end of inflation, at the end of the radiation phase and for the present time are in agreement with the standard model estimates. The analysis was performed with a potential containing a quadratic mass term plus a quartic self-interaction term, which follows naturally from the theory of mass-dimension-one fermions. Inflation occurs when the field makes a kind of transition around the Planck mass scale. The number of e-foldings during inflation was found to be strongly dependent on the initial conditions of the Elko field, as occurs in chaotic inflationary models. An upper limit to the Elko mass is estimated. A possible interpretation of the inflation as a consequence of a kind of Pauli exclusion principle is presented at the end. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11-01 2018-12-11T17:18:02Z 2018-12-11T17:18:02Z |
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/10.1209/0295-5075/120/31001 EPL, v. 120, n. 3, 2017. 1286-4854 0295-5075 http://hdl.handle.net/11449/175897 10.1209/0295-5075/120/31001 2-s2.0-85042144165 2-s2.0-85042144165.pdf |
url |
http://dx.doi.org/10.1209/0295-5075/120/31001 http://hdl.handle.net/11449/175897 |
identifier_str_mv |
EPL, v. 120, n. 3, 2017. 1286-4854 0295-5075 10.1209/0295-5075/120/31001 2-s2.0-85042144165 2-s2.0-85042144165.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
EPL 0,498 0,498 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
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_ |
1808128231690207232 |