报告题目：Gravitational waves from first-order phase transition during inflation 

报告人：安海鹏 教授，清华大学物理系

报告时间：2021年4月8日（周四）10:30-11:30

报告地点：中科院高能所图书馆楼319会议室

腾讯会议ID：824 6579 2265

活动网页：https://indico.ihep.ac.cn/category/824/

报告摘要：

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.

个人简介：

Haipeng An got his Ph.D. from University of Maryland in 2011. Then he moved to the Perimeter Institute for Theoretical Physics from 2011 to 2014. Then he worked at Caltech as a Walker Burke Postdoctoral Fellow from 2014 to 2017. He joined Tsinghua University in 2017. His research mainly focuses on particle phenomenology and cosmology. His best known work is the first correct calculation of the solar production rate of light dark photon (a hypocritical vector particle mixes with photon through kinetic mixing).