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| dc.contributor | Solà Peracaula, Joan | |
| dc.creator | Bernárdez Gil, Guillermo | |
| dc.date | 2016-03-08T17:30:12Z | |
| dc.date | 2016-03-08T17:30:12Z | |
| dc.date | 2016-01 | |
| dc.date.accessioned | 2024-12-16T10:22:06Z | |
| dc.date.available | 2024-12-16T10:22:06Z | |
| dc.identifier | http://hdl.handle.net/2445/96261 | |
| dc.identifier.uri | http://fima-docencia.ub.edu:8080/xmlui/handle/123456789/13767 | |
| dc.description | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2016, Tutor: Joan Solà Peracaula | |
| dc.description | The possibility of a slow cosmic evolution of fundamental \constants" of Nature has been discussed for a long time without being consolidated; recently, however, more and more experiments are arising whose results seem to support this idea. Apart from that, in an expanding universe the vacuum energy density p is expected to be a time-evolving parameter rather than the rigid one proposed in the standard ACDM model; in fact, quantum feld theory in curved space time suggests a slow evolution determined by the expansion rate of the universe H. In this work, we will try to obtain and develop some cosmological models with such a a dynamical vacuum energy density, and at the same time we will check whether they can provide an explanation for the alleged slow time variation of the fundamental constants | |
| dc.format | 5 p. | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.rights | cc-by-nc-nd (c) Bernárdez, 2016 | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Treballs Finals de Grau (TFG) - Física | |
| dc.subject | Models astronòmics | |
| dc.subject | Cosmologia | |
| dc.subject | Treballs de fi de grau | |
| dc.subject | Constants físiques | |
| dc.subject | Astronomical models | |
| dc.subject | Cosmology | |
| dc.subject | Bachelor's theses | |
| dc.subject | Physical constants | |
| dc.title | Fundamental constants of nature and their possible time variation | |
| dc.type | info:eu-repo/semantics/bachelorThesis |
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