Abstract: 

  A significant amount of our Universe is composed of dark matter, which has so far eluded various experimental searches, except those astronomical observations that illuminate the gravitational interaction of dark matter. If dark matter is an elementary particle, it should be produced in the early universe, based on the standard model of particle physics and cosmology. In this talk, we shall give an overview how gravitational interaction could contribute to the production of dark matter in inflationary cosmology and discuss various factors that can affect the relic density. 

Introduction of the speaker: 

  Yong Tang got his PhD in 2011 from Institute of Theoretical Physics,Chinese Academy of Sciences. After that, he has been working in National Tsing Hua University, Korea Institute of Advanced Study and University of Tokyo, before joining University of Chinese Academy of Sciences. His research fields include theoretical high energy physics,particle cosmology and gravitational physics.

Tencent Meeting: https://meeting.tencent.com/s/QkteDulSnBbl，ID: 371 432 160