2 papers
hep-th2026
Tropical and Stringy Integrals for In-In Correlators
Song He, Xiang Li, Yong-Xiang Su +1
We introduce tropical and stringy integrals for fixed-graph contributions to cosmological in-in correlators of conformally coupled scalars. The full-time representation factorizes…
hep-th2026
On the simplicity of de Sitter correlators
Chandramouli Chowdhury, Song He, Yong-Xiang Su +1
Motivated by recent evidence that equal-time correlators can be simpler than the corresponding wavefunction coefficients, we study de Sitter correlators in conformally coupled $ϕ^3…