45 citations · 345 across the 22 of their papers we have counts for
23 papers
Three-Reggeon exchange in SYM to leading logarithmic accuracy
Claude Duhr, Zhenjie Li, Chi Zhang
We study eight-point amplitudes in the planar Super Yang-Mills theory in multi-Regge kinematics in the Mandelstam region that receives contributions from both two-…
Eight loop form factors, amplitudes and patterns in planar super-Yang-Mills theory
Lance J. Dixon, Zhenjie Li
The simplest nontrivial amplitude in planar super-Yang-Mills theory is six-gluon scattering in the maximally-helicity-violating configuration. It has been computed…
Two-loop MHV Form Factors from the Periodic Wilson Loop
Zhenjie Li
We discuss how to compute maximal-helicity-violating (MHV) form factors for the chiral part of the stress-tensor supermultiplet from periodic light-like polygon Wilson loops in pla…
Integrating the full four-loop negative geometries and all-loop ladder-type negative geometries in ABJM theory
Zhenjie Li
The decomposition of the four-point ABJM amplituhedron into negative geometries produces compact integrands of logarithmic of amplitudes such that the infrared divergence only come…
Emergent unitarity, all-loop cuts and integrations from the ABJM amplituhedron
Song He, Chia-Kai Kuo, Zhenjie Li +1
We elaborate on aspects of a new positive geometry proposed recently, which was conjectured to be the four-point amplituhedron for ABJM theory. We study generalized unitarity cuts…
The two-loop eight-point amplitude in ABJM theory
Song He, Yu-tin Huang, Chia-Kai Kuo +1
In this paper, we present the two-loop correction to scattering amplitudes in three-dimensional Chern-Simons matter theory. We use eight-point case as our main exam…
A nice two-loop next-to-next-to-MHV amplitude in super-Yang-Mills
Song He, Zhenjie Li, Chi Zhang
We study a scalar component of the 8-point next-to-next-to-maximally-helicity-violating (NMHV) amplitude at two-loop level in super-Yang-Mills theory; it has a l…
A study of Feynman integrals with uniform transcendental weights and the symbology from dual conformal symmetry
Song He, Zhenjie Li, Rourou Ma +3
Multi-loop Feynman integrals are key objects for the high-order correction computations in high energy phenomenology. These integrals with multiple scales, may have complicated sym…
All-Loop Four-Point Aharony-Bergman-Jafferis-Maldacena Amplitudes from Dimensional Reduction of the Amplituhedron
Song He, Chia-Kai Kuo, Zhenjie Li +1
We define a new geometry obtained from the all-loop amplituhedron in SYM by reducing its four-dimensional external and loop momenta to three dimensions. Focusing on th…
Kinematics, cluster algebras and Feynman integrals
Song He, Zhenjie Li, Qinglin Yang
We identify cluster algebras for planar kinematics of conformal Feynman integrals in four dimensions, as sub-algebras of that for top-dimensional corresponding to -poin…
The Three-loop MHV Octagon from equations
Zhenjie Li, Chi Zhang
The equations, rooted in the dual superconformal anomalies, are a powerful tool for computing amplitudes in planar supersymmetric Yang-Mills theory. By us…
Comments on all-loop constraints for scattering amplitudes and Feynman integrals
Song He, Zhenjie Li, Qinglin Yang
We comment on the status of "Steinmann-like" constraints, i.e. all-loop constraints on consecutive entries of the symbol of scattering amplitudes and Feynman integrals in planar ${…
Truncated cluster algebras and Feynman integrals with algebraic letters
Song He, Zhenjie Li, Qinglin Yang
We propose that the symbol alphabet for classes of planar, dual-conformal-invariant Feynman integrals can be obtained as truncated cluster algebras purely from their kinematics, wh…
Bootstrapping octagons in reduced kinematics from cluster algebras
Song He, Zhenjie Li, Yichao Tang +1
Multi-loop scattering amplitudes/null polygonal Wilson loops in super-Yang-Mills are known to simplify significantly in reduced kinematics, where external legs/edg…
Notes on cluster algebras and some all-loop Feynman integrals
Song He, Zhenjie Li, Qinglin Yang
We study cluster algebras for some all-loop Feynman integrals, including box-ladder, penta-box-ladder, and (seven-point) double-penta-ladder integrals. In addition to the well-know…
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 Wilson-loop representation for Feynman integrals
Song He, Zhenjie Li, Yichao Tang +1
We introduce and study the Wilson-loop representation of certain Feynman integrals for scattering amplitudes in SYM and beyond, which makes their evaluat…
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…
A Note on Letters of Yangian Invariants
Song He, Zhenjie Li
Motivated by reformulating Yangian invariants in planar SYM directly as forms on momentum-twistor space, we propose a purely algebraic problem of determining t…
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…