Speaker
Haipeng An
(Tsinghua University)
Description
Abstract: During the inflation era, the properties (such as mass and interactions) of the fields coupled to the inflaton field may change substantially. As a result, drastic phenomena, such as first order phase transitions, may happen. In this talk, I will present simple models that first-order phase transition can happen and finish during inflation. I will discuss the properties of the gravitational wave (GW) signals produced by first-order phase transitions during inflation. I will show that there is a unique oscillatory feature in the GW spectrum. I will also show that we may be able to observe directly such a signal through future terrestrial or spatial GW detectors.
Authors
Haipeng An
(Tsinghua University)
Dr
Kunfeng Lyu
(HKUST)
Prof.
Lian-Tao Wang
(U.Chicago)
Dr
Siyi Zhou
(U. of Stockholm)
