Seminarium Kosmologia i Fizyka Cząstek

The dynamical relaxation provides an interesting solution to the hierarchy problem in face of the missing signatures of any new physics in recent experiments. Through a dynamical process taking place in the inflationary phase of the universe it manages to achieve a small electroweak scale without introducing new states observable in current experiments, all while maintaining technical naturalness. In this talk I will present some aspects of applying this mechanism (in its double-scanning variant) to models with two Higgs doublets. I will show how a simple approximation can be used to derive an explicit formula for the final, relaxed vevs, and how in general the dynamical relaxation fails to produce small vevs if multiple scalars are relaxed simultaneously. I will also discuss the possible ways out of this problem and the conditions that must be satisfied for relaxation to remain viable.