Title: Gravitational particle creation in the early universe
Abstract: Within the last decade, we have been able to observe our universe with incrediblyhigh precision. Nevertheless, there are theoretical problems that still do not havean answer. In this thesis, we have studied the issue of the initial conditions of in-flation, and we proposed a model for which they arise naturally as an attractor.It is achieved by considering the interaction of the inflaton with a thermal bathof particles, which are in equilibrium with the horizon temperature. If inflationhappens at high energies, the electroweak vacuum is unstable. Therefore, we stud-ied how fermions help make the Standard Model more stable, by calculating theirgravitational creation during inflation.
Publication Year: 2020
Publication Date: 2020-10-20
Language: en
Type: dissertation
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