Prueba geométrica de potenciales Tracker en cosmología
dc.contributor.advisor | Castañeda Colorado, Leonardo | spa |
dc.contributor.author | Moreno Sánchez, Alexander | spa |
dc.date.accessioned | 2025-05-21T14:58:25Z | |
dc.date.available | 2025-05-21T14:58:25Z | |
dc.date.issued | 2025 | |
dc.description | ilustraciones, diagramas | spa |
dc.description.abstract | A partir del descubrimiento de la expansión acelerada del universo se han desarrollado muchos mode- los de energía oscura, los cuales en gran medida explican las observaciones hoy día. Uno de los modelos de mayor interés surgido algunas décadas atrás son los modelos de quintaesencia, en particular se abordan los modelos de quintaesencia desde el punto de vista de los campos trackers, los cuales permiten explicar la expansión acelerada del universo mediante la introducción de un campo escalar dinámico y un potencial escalar. Para el desarrollo de este estudio se obtiene una aproximación de sistemas dinámicos cosmológicos para modelos de campos trackers en quintaesencia y un acercamiento a sistemas dinámicos en teorías f(R). Para obtener un contraste con datos observacionales como SN Ia y cronómetros cósmicos se realiza el ajuste de parámetros cosmológicos y de potenciales trackers, tales como inverso de potencias, exponencial e hiper- bólico, todo ello enmarcado en el análisis de la estadística bayesiana y mediante el esquema MCMC. Así, se obtuvieron las soluciones para los sistemas dinámicos planteados, el análisis de elementos cosmológicos para LCDM y wCDM, y un estudio de potenciales trackers en quintaesencia bajo pruebas geométricas cos- mológicas, como de restricciones dadas por los datos observacionales, lo cual permite determinar algunos elementos propios de los campos trackers y de quintaesencia para aportar al entendimiento de la energía oscura y su fenomenología (Texto tomado de la fuente). | spa |
dc.description.abstract | Since the discovery of the accelerating expansion of the universe, many dark energy models have been de- veloped, which largely explain the observations today. One of the models of greatest interest that emerged a few decades ago are quintessence models, in particular quintessence models are addressed from the point of view of tracker elds, which allow us to explain the accelerated expansion of the universe by introduc- ing a eld dynamic scalar and a scalar potential. For the development of this study, an approximation of cosmological dynamical systems is obtained for quintessential tracker eld models and an approach to dynamical systems in f(R) theories. To obtain a contrast with observational data such as SN Ia and cosmic chronometers, the adjustment of cosmological parameters and potential trackers is performed, such as in- verse of powers, exponential and hyperbolic, all marked in the analysis of Bayesian statistics and through the scheme MCMC. Then, the solutions for the proposed dynamic systems were obtained, the analysis of cosmological elements for LCDM and wCDM, and a study of potential quintessential trackers under cos- mological geometric tests, as well as restrictions given by the observational data, which allows determining some elements for the tracker and quintessence elds to contribute to the understanding of dark energy and its phenomenology. | eng |
dc.description.degreelevel | Maestría | spa |
dc.description.degreename | Magíster en Ciencias - Física | spa |
dc.format.extent | 269 páginas | spa |
dc.format.mimetype | application/pdf | spa |
dc.identifier.instname | Universidad Nacional de Colombia | spa |
dc.identifier.reponame | Repositorio Institucional Universidad Nacional de Colombia | spa |
dc.identifier.repourl | https://repositorio.unal.edu.co/ | spa |
dc.identifier.uri | https://repositorio.unal.edu.co/handle/unal/88179 | |
dc.language.iso | spa | spa |
dc.publisher | Universidad Nacional de Colombia | spa |
dc.publisher.branch | Universidad Nacional de Colombia - Sede Bogotá | spa |
dc.publisher.faculty | Facultad de Ciencias | spa |
dc.publisher.place | Bogotá, Colombia | spa |
dc.publisher.program | Bogotá - Ciencias - Maestría en Ciencias - Física | spa |
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dc.rights.accessrights | info:eu-repo/semantics/openAccess | spa |
dc.rights.license | Reconocimiento 4.0 Internacional | spa |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | spa |
dc.subject.ddc | 530 - Física::539 - Física moderna | spa |
dc.subject.ddc | 520 - Astronomía y ciencias afines::522 - Técnicas, procedimientos, aparatos, equipos, materiales | spa |
dc.subject.ddc | 110 - Metafísica::113 - Cosmología (Filosofía de la naturaleza) | spa |
dc.subject.ddc | 520 - Astronomía y ciencias afines::523 - Cuerpos y fenómenos celestes específicos | spa |
dc.subject.lemb | UNIVERSO EN EXPANSION | spa |
dc.subject.lemb | Expanding universe | eng |
dc.subject.lemb | COSMOLOGIA | spa |
dc.subject.lemb | Cosmology | eng |
dc.subject.lemb | SISTEMAS DE HAMILTON | spa |
dc.subject.lemb | Hamiltonian systems | eng |
dc.subject.lemb | SISTEMAS DINAMICOS DIFERENCIALES | spa |
dc.subject.lemb | Differentiable dynamical systems | eng |
dc.subject.lemb | METODO DE MONTECARLO | spa |
dc.subject.lemb | Monte carlo method | eng |
dc.subject.lemb | ANALISIS NUMERICO | spa |
dc.subject.lemb | Numerical analysis | eng |
dc.subject.proposal | Energía oscura | spa |
dc.subject.proposal | Expansión acelerada | spa |
dc.subject.proposal | Quintaesencia | spa |
dc.subject.proposal | Campo tracker | spa |
dc.subject.proposal | Sistema dinámico | spa |
dc.subject.proposal | Potencial escalar | spa |
dc.subject.proposal | Estadística bayesiana | spa |
dc.subject.proposal | Método Markov Monte Carlo | spa |
dc.subject.proposal | Accelerated expansion | eng |
dc.subject.proposal | Dark energy | eng |
dc.subject.proposal | Quintessence | eng |
dc.subject.proposal | Tracker field | eng |
dc.subject.proposal | Dynamic system | eng |
dc.subject.proposal | Scalar potential | eng |
dc.subject.proposal | Bayesian statistics | eng |
dc.subject.proposal | Markov Monte Carlo method | eng |
dc.title | Prueba geométrica de potenciales Tracker en cosmología | spa |
dc.title.translated | Geometric proof of Tracker potentials in cosmology | eng |
dc.type | Trabajo de grado - Maestría | spa |
dc.type.coar | http://purl.org/coar/resource_type/c_bdcc | spa |
dc.type.coarversion | http://purl.org/coar/version/c_ab4af688f83e57aa | spa |
dc.type.content | Text | spa |
dc.type.driver | info:eu-repo/semantics/masterThesis | spa |
dc.type.redcol | http://purl.org/redcol/resource_type/TM | spa |
dc.type.version | info:eu-repo/semantics/acceptedVersion | spa |
dcterms.audience.professionaldevelopment | Estudiantes | spa |
dcterms.audience.professionaldevelopment | Grupos comunitarios | spa |
dcterms.audience.professionaldevelopment | Investigadores | spa |
dcterms.audience.professionaldevelopment | Maestros | spa |
oaire.accessrights | http://purl.org/coar/access_right/c_abf2 | spa |
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