Pushing the boundaries of modern cosmology: physics beyond the Copernican principle

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dc.contributor.advisor1Marra, Valerio
dc.contributor.advisor1IDhttps://orcid.org/0000000277731579
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/6846011112691877
dc.contributor.authorTorres, David Francisco Camarena
dc.contributor.authorIDhttps://orcid.org/0000000171650439
dc.contributor.authorLatteshttp://lattes.cnpq.br/2093261235489631
dc.contributor.referee1Piattella, Oliver Fabio
dc.contributor.referee1IDhttps://orcid.org/0000000345580574
dc.contributor.referee1Latteshttp://lattes.cnpq.br/5707156831919279
dc.contributor.referee2Amendola, Luca
dc.contributor.referee2IDhttps://orcid.org/0000-0002-0835-233X
dc.contributor.referee2Latteshttp://lattes.cnpq.br/7512327723238183
dc.contributor.referee3Sapone, Domenico
dc.contributor.referee3IDhttps://orcid.org/
dc.contributor.referee3Latteshttp://lattes.cnpq.br/
dc.contributor.referee4Clarkson, Chris
dc.date.accessioned2024-05-30T00:53:52Z
dc.date.available2024-05-30T00:53:52Z
dc.date.issued2022-08-16
dc.description.abstractThe standard paradigm of modern cosmology relies on a set of fundamental assumptions that simplify and make possible the modeling of the Universe. Among these critical hypotheses, there is the presumption that we do not occupy a special place in the Uni- verse, the so-called Copernican principle. The assumption of this principle constrains the degrees of freedom allowed by the theory, and, in particular, within the framework of the General Theory of Relativity, leads to a spatially homogeneous and isotropic space-time. Here, we present a program to observationally test the Copernican princi- ple and study the cosmological applications of inhomogeneous cosmologies. Under the assumption of a spherically inhomogeneous extension of the standard model and using the latest cosmological data, we test the Copernican principle by placing constraints on radial deviations of the spatially homogeneous and isotropic space-time. We also forecast the precision with which future surveys, such as DES, Euclid and LSST, will be able to test the Copernican principle and test their ability to detect any possible violations. Furthermore, we investigate if a local void could explain away the 5σ discrepancy between the early and late times determinations of the Hubble constant. Our goal is to take the first steps to extend the boundary of the standard paradigm of modern cosmology, and, in particular, to develop a suitable framework for the development of physics beyond the Copernican principle.
dc.description.sponsorshipFundação Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.formatText
dc.identifier.urihttp://repositorio.ufes.br/handle/10/16149
dc.languagepor
dc.publisherUniversidade Federal do Espírito Santo
dc.publisher.countryBR
dc.publisher.courseDoutorado em Astrofísica, Cosmologia e Gravitação
dc.publisher.departmentCentro de Ciências Exatas
dc.publisher.initialsUFES
dc.publisher.programPrograma de Pós-Graduação em Astrofísica, Cosmologia e Gravitação
dc.rightsopen access
dc.subjectCosmologia
dc.subjectGravitação
dc.subject.br-rjbnsubject.br-rjbn
dc.subject.cnpqAstronomia
dc.titlePushing the boundaries of modern cosmology: physics beyond the Copernican principle
dc.typedoctoralThesis
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