35 citations · 64 across the 4 of their papers we have counts for
9 papers
Feynman Integrals and Scattering Amplitudes from Wilson Loops
Song He, Zhenjie Li, Qinglin Yang +1
We study Feynman integrals and scattering amplitudes in super-Yang-Mills by exploiting the duality with null polygonal Wilson loops. Certain Feynman integrals, includi…
The symbol and alphabet of two-loop NMHV amplitudes from equations
Song He, Zhenjie Li, Chi Zhang
We study the symbol and the alphabet for two-loop NMHV amplitudes in planar super-Yang-Mills from the equations, which provide a first-principle method for c…
Stringy canonical forms and binary geometries from associahedra, cyclohedra and generalized permutohedra
Song He, Zhenjie Li, Prashanth Raman +1
Stringy canonical forms are a class of integrals that provide -deformations of the canonical form of any polytopes. For generalized associahedra of finite-type cluster algebra,…
Blowing up Stringy Canonical Forms: An Algorithm to Win a Simplified Hironaka's Polyhedra Game
Zhenjie Li, Chi Zhang
We provide an efficient method of blowing up to compute leading order contributions of the recently introduced stringy canonical forms. The method is related to the well-known Hiro…
Two-loop Octagons, Algebraic Letters and Equations
Chi Zhang, Zhenjie Li, Song He
We compute the symbol of the first two-loop amplitudes in planar SYM with algebraic letters, the eight-point NMHV amplitude (or the dual octagon Wilson loops). We show…
Moduli Space of Paired Punctures, Cyclohedra and Particle Pairs on a Circle
Zhenjie Li, Chi Zhang
In this paper, we study a new moduli space , which is obtained from by identifying pairs of punctures. We find that this spac…