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Parity violation in cosmological inflationary models including vector fields.

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dc.contributor.authorValenzuela Toledo, César Alonso
dc.contributor.corporatenameUniversidad del Valle (Cali, Colombia)spa
dc.contributor.researchgroupCOL0007059 - Gravitación
dc.contributor.researchgroupCOL0010279 - Grupo de Investigación en Relatividad y Gravitación
dc.contributor.researchgroupCOL0022941 - Física-Fenomenología de Partículas Elementales y Cosmología
dc.coverage.projectdates2013-2017spa
dc.coverage.spatialValle (Colombia)
dc.date.accessioned2020-10-26T18:03:00Z
dc.date.accessioned2020-12-17T23:55:43Z
dc.date.available2020-10-26T18:03:00Z
dc.date.available2020-12-17T23:55:43Z
dc.date.issued2017-10-02
dc.description.abstractIn the context of inflationary cosmology, the study of the primordial curvature perturbation $\zeta$ allows us to characterize the statistical properties of the primordial seeds that gave origin to all the structures that we see today in our Universe. In the standard and most accepted models, this quantity describes a distribution of the primordial fluctuations which is almost adiabatic, almost gaussian, and almost scale invariant, whereas it preserves the statistical homogeneity and isotropy. Any deviation from this behaviour can be used to parametrize effects related to the models proposed to describe cosmological inflation and provides us with valuable information to understand the agents that gave shape to the early Universe. In this project, we study inflationary models inspired by particle physics models which include vector fields with gauge symmetries. The inclusion of gauge vector fields is interesting since they naturally introduce a source of statistical anisotropy in the spectrum of primordial fluctuations. Additionally, in some of those scenarios, one would also find the presence of parity violation at the action level. Those parity violation effects are potentially observable since they can leave specific signatures in the Cosmic Microwave Background (CMB) radiation and their detection would give crucial information about the nature of the fields existing during the inflationary era and their interactions. The main objective of this project is to parametrize the effects related to parity violation in gauge vector field models and evaluate how they enter in the statistical distribution of primordial fluctuations predicted in those models. We will study the effects related to parity violation by evaluating the non-zero correlations between the E-modes and B-modes of the tensor modes in the spectrum of the primordial fluctuations. With this characterization and its comparison with observations, we expect to obtain relevant criteria to understand the nature of the fields present during inflation and their interactions.spa
dc.description.notesTextos en español.
dc.format.extent35 páginas.spa
dc.identifier.instnameColcienciasspa
dc.identifier.reponameRepositorio Colcienciasspa
dc.identifier.repourlhttp://colciencias.metabiblioteca.com.cospa
dc.identifier.urihttps://colciencias.metadirectorio.org/handle/11146/39160
dc.language.isospaspa
dc.relation.ispartofseriesInforme;
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.accessrightshttp://purl.org/coar/access_right/c_abf2spa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.accessrightshttp://purl.org/coar/access_right/c_abf2spa
dc.rights.creativecommonshttps://creativecommons.org/licenses/by/4.0/spa
dc.subject.proposalCosmologyspa
dc.subject.proposalInflationspa
dc.subject.proposalNon-gaussianityspa
dc.subject.proposalParity violationspa
dc.subject.proposalStatistical anisotropyspa
dc.subject.proposalVector fieldsspa
dc.titleParity violation in cosmological inflationary models including vector fields.spa
dc.typeInforme de investigaciónspa
dc.type.coarhttp://purl.org/coar/resource_type/c_93fcspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/reportspa
dc.type.redcolhttps://purl.org/redcol/resource_type/PIDspa
dc.type.versioninfo:eu-repo/semantics/submittedVersionspa
dc.type.versionhttp://purl.org/coar/version/c_71e4c1898caa6e32spa
dc.type.versioninfo:eu-repo/semantics/submittedVersionspa
dc.type.versionhttp://purl.org/coar/version/c_71e4c1898caa6e32spa
dcterms.audienceEstudiantes, Profesores, Comunidad científica colombiana, etc.spa
dspace.entity.typePublication
oaire.awardnumber110656399958spa
oaire.funderidentifier.colciencias0384-2013
oaire.fundernameDepartamento Administrativo de Ciencia, Tecnología e Innovación [CO] Colcienciasspa
oaire.fundingstreamPrograma Nacional en Ciencias Básicasspa
oaire.objetivesTo investigate cosmological inflationary models that involve gauge vector fields and a "vectorial'' Chern-Simons term and that, therefore, generate anisotropic expansion, non-gaussianity, statistical anisotropy, and parity violation, relying in configurations which are natural from the particle physics side.spa

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