报告摘要：
Heavy particles can be produced on shell during inflation and leave distinct signals in the correlations of density fluctuations. These signals can be searched for in the future CMB/LSS/21cm observations. In this talk I will introduce the basics of this cosmological collider program. I will then talk about some recent works along this direction with fun physics and visibly large signals, including neutrino physics with relation to seesaw mechanisms and leptogenesis, probing CP violations, missing energies, and a scenario of Cosmological Higgs Collider. I’ll also discuss the theory challenges and recent efforts in computing inflation correlators.
个人简介：
Zhong-Zhi Xianyu is currently an assistant professor at Department of Physics, Tsinghua University. He obtained his PhD in 2015 from Tsinghua and was a postdoc at Harvard from 2015 to 2020. He works mainly in theoretical particle physics and cosmology. His recent research interests include inflation, non-Gaussianity, new physics in the early universe and in astrophysical systems, gravitational wave astronomy, etc.
腾讯会议ID：917 8905 3861