8 citations · 9 across the 5 of their papers we have counts for
4 papers · 1 filter
From Trees to All Loops: The Combinatorial Geometry of Two-Site Cosmological Wavefunctions
Yanfeng Hang, Cong Shen
We prove, at arbitrary loop order and including arbitrary tadpole decorations, the shifted-tree decomposition of two-site cosmological wavefunction coefficients proposed in our pre…
Equivalence Theorems and Double-Copy Structure in Scattering Amplitudes of Massive Kaluza-Klein States with Matter Interactions
Kezhu Guo, Yanfeng Hang
We investigate the scattering amplitudes of massive Kaluza-Klein (KK) states in compactified five-dimensional warped gauge and gravity theories. Focusing on tree-level proc…
A Note on Kinematic Flow and Differential Equations for Two-Site One-Loop Graph in FRW Spacetime
Yanfeng Hang, Cong Shen
In this work, we systematically study the differential systems governing loop-level wavefunction coefficients of conformally-coupled scalar field theory within a general power-law…
Structure of Massive Gauge/Gravity Scattering Amplitudes, Equivalence Theorems, and Extended Double-Copy with Compactified Warped Space
Yanfeng Hang, Wei-Wei Zhao, Hong-Jian He +1
We study the structure of scattering amplitudes of massive Kaluza-Klein (KK) states in the compactified 5-dimensional warped gauge and gravity theories. We present systematic formu…