Matter growth in imperfect fluid cosmology.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorWilhelm, Zimdahl Winfried Ernst-
Autor(es): dc.creatorVelten, Hermano Endlich Schneider-
Autor(es): dc.creatorAlgoner Jorge, William Celestino-
Data de aceite: dc.date.accessioned2025-08-21T15:10:46Z-
Data de disponibilização: dc.date.available2025-08-21T15:10:46Z-
Data de envio: dc.date.issued2023-01-17-
Data de envio: dc.date.issued2023-01-17-
Data de envio: dc.date.issued2019-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/jspui/handle/123456789/16005-
Fonte completa do material: dc.identifierhttps://doi.org/10.3390/universe5030068-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1004534-
Descrição: dc.descriptionExtensions of Einstein’s General Relativity (GR) can formally be given a GR structure in which additional geometric degrees of freedom are mapped on an effective energy-momentum tensor. The corresponding effective cosmic medium can then be modeled as an imperfect fluid within GR. The imperfect fluid structure allows us to include, on a phenomenological basis, anisotropic stresses and energy fluxes which are considered as potential signatures for deviations from the cosmological standard Λ-cold-dark-matter (ΛCDM) model. As an example, we consider the dynamics of a scalar-tensor extension of the standard model, the eΦΛCDM model. We constrain the magnitudes of anisotropic pressure and energy flux with the help of redshift-space distortion (RSD) data for the matter growth function f σ8.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Fonte: o PDF do artigo.-
Palavras-chave: dc.subjectFluid cosmology-
Palavras-chave: dc.subjectCosmological perturbation theory-
Palavras-chave: dc.subjectScalar-tensor theory-
Palavras-chave: dc.subjectCosmic structure formation-
Título: dc.titleMatter growth in imperfect fluid cosmology.-
Aparece nas coleções:Repositório Institucional - UFOP

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