Naoya Kitajima
July 5(Wed) - July 5(Wed), 2017
3:00 pm
CTPU Seminar Room, KAIST Munji Campus
* Speaker : Naoya Kitajima(Nagoya University)
* Date : 3:00 pm, July 5 2017
* Place : CTPU Seminar Room, KAIST Munji Campus
* Title : Cosmological stochastic Higgs stabilization
* Abstract : Stochastic evolution of an interacting system of the Higgs and a gauge-singlet scalar spectator field during inflation naturally gives rise to an enhanced probability of settling down at the electroweak vacuum even for high-scale inflation models. In addition, subsequent destabilization due to parametric resonance between the Higgs and the singlet field can be avoided in a wide parameter range. A possibility that the singlet field plays a role of dark matter is also argued.