Speaker
Zhong-Zhi Xianyu
(Tsinghua University)
Description
Boundary correlators of dS bulk fields are important theoretical data for QFT in dS, and are also observables of cosmological collider physics. We will present recent progress in understanding the analytic structure of these inflation correlators with massive exchanges at either tree or loop orders. We will explain why the nonanalyticity of Inflation Correlators is phenomenologically important, and how such nonanalyticity can be diagnosed and computed via the on-shell factorization and the corresponding cutting rules.
Primary author
Zhong-Zhi Xianyu
(Tsinghua University)
