cosmological collider 1heavy fields 1inflation 1mixed propagators 1non-gaussianity 1squeezed bispectrum 1
From the 1 of 3 linked papers with an AI index.
3 papers
hep-th2026
Cosmological Collider Signals at Strong Mixing
Xiangwei Wang, Yi Wang, Yunke Zhao
The paper analyzes cosmological collider signals in a two‑field inflation model with constant‑turn derivative mixing, using exact hypergeometric solutions and Mellin‑Barnes techniq…
gr-qc2026
On Cosmological Correlators with Boundary Contributions
Yanjiao Ma, Dong-Gang Wang, Xiangwei Wang +2
Cosmological correlators receive contributions from both field interactions in the bulk of quasi-de Sitter (dS) spacetime and boundary terms at the end of inflation. While most of…
hep-th2025
Interact or Twist: Cosmological Correlators from Field Redefinitions Revisited
Donggang Wang, Xiangwei Wang, Yi Wang +1
In cosmology, correlation functions on a late-time boundary can arise from both field redefinitions and bulk interactions, which are usually believed to generate distinct results.…