Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/96261
Title: Fundamental constants of nature and their possible time variation
Author: Bernárdez Gil, Guillermo
Director: Solà Peracaula, Joan
Keywords: Models astronòmics
Cosmologia
Tesis
Constants físiques
Astronomical models
Cosmology
Theses
Physical constants
Issue Date: Jan-2016
Abstract: 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
Note: Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2016, Tutor: Joan Solà Peracaula
URI: http://hdl.handle.net/2445/96261
Appears in Collections:Treballs Finals de Grau (TFG) - Física

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