2 papers
hep-th2025
Massive Inflationary Amplitudes: New Representations and Degenerate Limits
Zhong-Zhi Xianyu, Jiaju Zang
The particle model building of cosmological collider physics often involves boost-breaking bilinear mixing between a heavy particle and the nearly massless inflaton mode. In cosmol…
hep-th2023
Inflation Correlators with Multiple Massive Exchanges
Zhong-Zhi Xianyu, Jiaju Zang
The most general tree-level boundary correlation functions of quantum fields in inflationary spacetime involve multiple exchanges of massive states in the bulk, which are technical…