Employing dark matter and phantom-like fluids to alleviate the Hubble tension
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFPB |
Texto Completo: | https://repositorio.ufpb.br/jspui/handle/123456789/30508 |
Resumo: | In this doctoral thesis, I investigate how the decay of a very heavy particle into dark matter and photons (or neutrinos) can alleviate the Hubble tension, that is, it can reconcile the value of the Hubble constant (H0) measured through the analysis of the cosmic microwave background (CMB) radiation with the measurements obtained in regions of the universe with low redshift. I show that by adopting the standard cosmological model, ΛCDM, this mechanism is unable to completely remove the tension, resulting in only a small reduction between the measurements of H0. However, in a universe with a phantom-like fluid, the decay adds enough radiation to the point where CMB measurements allow for H0 within the range of 70−74 km s−1 Mpc−1, which would completely eliminate the tension. I also use constraints from BBN to show that many of the important results of the standard cosmology are preserved, which prevents the model from being phenomenologically excluded. |
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Employing dark matter and phantom-like fluids to alleviate the Hubble tensionCosmologiaMatéria escuraTensão de HubbleTeoria de campo efetivaCosmologyDark matterHubble tensionEffective field theoryCNPQ::CIENCIAS EXATAS E DA TERRA::FISICAIn this doctoral thesis, I investigate how the decay of a very heavy particle into dark matter and photons (or neutrinos) can alleviate the Hubble tension, that is, it can reconcile the value of the Hubble constant (H0) measured through the analysis of the cosmic microwave background (CMB) radiation with the measurements obtained in regions of the universe with low redshift. I show that by adopting the standard cosmological model, ΛCDM, this mechanism is unable to completely remove the tension, resulting in only a small reduction between the measurements of H0. However, in a universe with a phantom-like fluid, the decay adds enough radiation to the point where CMB measurements allow for H0 within the range of 70−74 km s−1 Mpc−1, which would completely eliminate the tension. I also use constraints from BBN to show that many of the important results of the standard cosmology are preserved, which prevents the model from being phenomenologically excluded.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESNesta tese de doutorado, eu investigo como um decaimento de uma partícula muito pesada em matéria escura e photons (ou neutrinos) podem aliviar a tensão de Hubble, ou seja, pode fazer o valor da constante de Hubble (H0) medido através da análise da radiação cósmica de fundo (CMB) ser compatível com as medidas obtidas em regiões do universo com pequeno redshift. Mostro que adotando o modelo cosmológico padrão, ΛCDM, esse mecanismo não é capaz de remover totalmente a tensão, produzindo apenas uma pequena redução entre as medições de H0. Contudo, em um universo com um fluido do tipo fantasmagórico, o decaimento adiciona radiação suficiente ao ponto de medidas da CMB permitirem H0 no intervalor 70 − 74 km s−1 Mpc−1, o que eliminaria totalmente a tensão. Também utilizo restrições oriundas da BBN para mostrar que muitos dos importantes resultados da cosmologia padão são mantidos, o que faz o modelo não ser fenomenologicamente excluido.Universidade Federal da ParaíbaBrasilFísicaPrograma de Pós-Graduação em FísicaUFPBQueiroz, Farinaldo da Silvahttp://lattes.cnpq.br/9966377792236208Silva, Dêivid Rodrigo da2024-07-02T10:15:36Z2023-10-272024-07-02T10:15:36Z2023-06-23info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesishttps://repositorio.ufpb.br/jspui/handle/123456789/30508porAttribution-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nd/3.0/br/info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFPBinstname:Universidade Federal da Paraíba (UFPB)instacron:UFPB2024-07-03T06:07:33Zoai:repositorio.ufpb.br:123456789/30508Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufpb.br/PUBhttp://tede.biblioteca.ufpb.br:8080/oai/requestdiretoria@ufpb.br|| diretoria@ufpb.bropendoar:2024-07-03T06:07:33Biblioteca Digital de Teses e Dissertações da UFPB - Universidade Federal da Paraíba (UFPB)false |
dc.title.none.fl_str_mv |
Employing dark matter and phantom-like fluids to alleviate the Hubble tension |
title |
Employing dark matter and phantom-like fluids to alleviate the Hubble tension |
spellingShingle |
Employing dark matter and phantom-like fluids to alleviate the Hubble tension Silva, Dêivid Rodrigo da Cosmologia Matéria escura Tensão de Hubble Teoria de campo efetiva Cosmology Dark matter Hubble tension Effective field theory CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
title_short |
Employing dark matter and phantom-like fluids to alleviate the Hubble tension |
title_full |
Employing dark matter and phantom-like fluids to alleviate the Hubble tension |
title_fullStr |
Employing dark matter and phantom-like fluids to alleviate the Hubble tension |
title_full_unstemmed |
Employing dark matter and phantom-like fluids to alleviate the Hubble tension |
title_sort |
Employing dark matter and phantom-like fluids to alleviate the Hubble tension |
author |
Silva, Dêivid Rodrigo da |
author_facet |
Silva, Dêivid Rodrigo da |
author_role |
author |
dc.contributor.none.fl_str_mv |
Queiroz, Farinaldo da Silva http://lattes.cnpq.br/9966377792236208 |
dc.contributor.author.fl_str_mv |
Silva, Dêivid Rodrigo da |
dc.subject.por.fl_str_mv |
Cosmologia Matéria escura Tensão de Hubble Teoria de campo efetiva Cosmology Dark matter Hubble tension Effective field theory CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
topic |
Cosmologia Matéria escura Tensão de Hubble Teoria de campo efetiva Cosmology Dark matter Hubble tension Effective field theory CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA |
description |
In this doctoral thesis, I investigate how the decay of a very heavy particle into dark matter and photons (or neutrinos) can alleviate the Hubble tension, that is, it can reconcile the value of the Hubble constant (H0) measured through the analysis of the cosmic microwave background (CMB) radiation with the measurements obtained in regions of the universe with low redshift. I show that by adopting the standard cosmological model, ΛCDM, this mechanism is unable to completely remove the tension, resulting in only a small reduction between the measurements of H0. However, in a universe with a phantom-like fluid, the decay adds enough radiation to the point where CMB measurements allow for H0 within the range of 70−74 km s−1 Mpc−1, which would completely eliminate the tension. I also use constraints from BBN to show that many of the important results of the standard cosmology are preserved, which prevents the model from being phenomenologically excluded. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-10-27 2023-06-23 2024-07-02T10:15:36Z 2024-07-02T10:15:36Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufpb.br/jspui/handle/123456789/30508 |
url |
https://repositorio.ufpb.br/jspui/handle/123456789/30508 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
Attribution-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nd/3.0/br/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nd/3.0/br/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal da Paraíba Brasil Física Programa de Pós-Graduação em Física UFPB |
publisher.none.fl_str_mv |
Universidade Federal da Paraíba Brasil Física Programa de Pós-Graduação em Física UFPB |
dc.source.none.fl_str_mv |
reponame:Biblioteca Digital de Teses e Dissertações da UFPB instname:Universidade Federal da Paraíba (UFPB) instacron:UFPB |
instname_str |
Universidade Federal da Paraíba (UFPB) |
instacron_str |
UFPB |
institution |
UFPB |
reponame_str |
Biblioteca Digital de Teses e Dissertações da UFPB |
collection |
Biblioteca Digital de Teses e Dissertações da UFPB |
repository.name.fl_str_mv |
Biblioteca Digital de Teses e Dissertações da UFPB - Universidade Federal da Paraíba (UFPB) |
repository.mail.fl_str_mv |
diretoria@ufpb.br|| diretoria@ufpb.br |
_version_ |
1809927048172404736 |