Title: Cosmological Collider Phenomenology: the Standard Model and Beyond
Speaker: Dr. Zhong-Zhi Xianyu (Harvard University)
Time: 3:00PM, June 14th, 2018 (Thur.)
Place: Theoretical Physics Division, 319
Abstract:
The n-point correlation functions (n>2) of primordial fluctuations, known as primordial non-Gaussianities, encode rich information about the physical degrees of freedom and their interactions at inflation scale, and can be viewed as signals from a cosmological collider with huge energy. In this talk we introduce recent theoretical attempts to extract new physics at the inflation scale from primordial non-Gaussianities, including possible discovery channels, the background signals from the standard model, and signals from new physics such as heavy neutrinos.
Speaker introduction:
Zhong-Zhi Xianyu is currently postdoctoral fellow at Harvard University. He received his Ph. D in physics from Center for High Energy Physics at Tsinghua University, in 2015. His research interest covers several aspects of theoretical particle physics, cosmology, and astrophysics, including inflation theory, primordial non-Gaussianities, gravitational waves, etc.
