9 citations · 10 across the 7 of their papers we have counts for
7 papers · 1 filter
From Cosmological Cuts to Yang--Mills Wavefunctions in de Sitter Space
Song He, Jiajie Mei, Yuyu Mo
We study tree-level Yang--Mills wavefunctions in four-dimensional de Sitter space using their discontinuities. Cosmological cuts factorize gluon discontinuities into lower-point wa…
Operational Tube-Sector Theory of Quantum State Distinguishability Under Generalized Symmetries
Song He
A variational principle for quantum-state distinguishability is established in many-body systems with generalized symmetries, including noninvertible cases described by fusion cate…
Hidden simplicity in AdS spinning Mellin amplitudes via scaffolding
Song He, Xiang Li, Yuyu Mo +1
We uncover surprising hidden simplicity in Mellin amplitudes for tree-level AdS holographic correlators for spinning operators, such as AdS "gluons" and "gravitons" (spin 1 and 2).…
Loops and legs: ABJM amplitudes from -graphs
Song He, Yao-Qi Zhang
We initiate a systematic study on how to extract planar integrands of (supersymmetric) scattering amplitudes with loops and legs in Aharony-Bergman-Jafferis-Maldacena (ABJM…
Relative Rényi Entropy Under Local Quenches in 2D CFTs
Zi-Xuan Zhao, Song He, Hao Ouyang +2
We study the relative Rényi entropy (RRE) under local quenches in two-dimensional conformal field theories (CFTs), focusing on rational CFTs (RCFTs) and holographic CFTs. In RCFTs,…
Relation between time- and spacelike entanglement entropy
Wu-zhong Guo, Song He, Yu-Xuan Zhang
In this study, we establish a connection between timelike and spacelike entanglement entropy. We show that timelike entanglement entropy is closely related to spacelike entanglemen…
Entanglement and Pseudo Entanglement Dynamics versus Fusion in CFT
Song He, Yu-Xuan Zhang, Long Zhao +1
The fusion rules and operator product expansion (OPE) serve as crucial tools in the study of operator algebras within conformal field theory (CFT). Building upon the vision of usin…