Tesis doctoral de Sebastian Zsembinszki Gabriel
The most successful scientific theory today about the origin and evolution of the universe is known as the standard big bang model, which is one of the most ambitious intellectual constructions of humanity. It is based on two consolidated branches of theoretical physics, namely, the theory of general relativity and the standard model of particle physics, and is able to make robust predictions, such as the expansion of the universe, the existence of the cosmic microwave background radiation and the relative primordial abundance of light elements. Some of the theoretical predictions have already been confirmed by very precise observations. according to the standard big bang cosmology, the early universe consisted of a very hot and dense plasma that continuosly expanded and cooled up to the present, giving place to a series of cosmological phase transitions. Given that the energies of the early universe were much higher than those reached in terrestrial experiments, the study of the early universe might give us important information about new interactions and new particles, opening new directions for extending the standard model of particle physics. as mentioned above, during the expansion of the universe, different phase transitions occurred, which left their imprint on the present state of the universe. Observations suggest that during a very early phase transition the universe suffered a stage of accelerated expansion, known as inflation. Although inflation is not included in the standard cosmology, it is able to solve in a simple and elegant manner almost all of the shortcomings related to the standard big bang model, ans should be taken into account in any possible extension of the theory. Observations also reveal evidence of the existence of two unknown forms of energy, i.E., Dark matter and dark energy. Dark matter is a form of non-relativistic and non-baryonic matter, which can only be detected indirectly, through its gravitational interactions with normal ma
Datos académicos de la tesis doctoral «Light scalar fields in a dark universe: models of inflation, dark energy and dark matter«
- Título de la tesis: Light scalar fields in a dark universe: models of inflation, dark energy and dark matter
- Autor: Sebastian Zsembinszki Gabriel
- Universidad: Autónoma de barcelona
- Fecha de lectura de la tesis: 08/06/2007
Dirección y tribunal
- Director de la tesis
- Eduard Masso Soler
- Tribunal
- Presidente del tribunal: Grifols gras josep antoni
- jaume Garriga torres (vocal)
- alain Blanchard (vocal)
- Juan García-bellido capdevila (vocal)