65 citations · 444 across the 19 of their papers we have counts for
19 papers
An Infinite Family of Elliptic Ladder Integrals
Andrew McLeod, Roger Morales, Matt von Hippel +2
We identify two families of ten-point Feynman diagrams that generalize the elliptic double box, and show that they can be expressed in terms of the same class of elliptic multiple…
Bootstrapping elliptic Feynman integrals using Schubert analysis
Roger Morales, Anne Spiering, Matthias Wilhelm +2
The symbol bootstrap has proven to be a powerful tool for calculating polylogarithmic Feynman integrals and scattering amplitudes. In this letter, we initiate the symbol bootstrap…
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…
Symbology for elliptic multiple polylogarithms and the symbol prime
Matthias Wilhelm, Chi Zhang
Elliptic multiple polylogarithms occur in Feynman integrals and in particular in scattering amplitudes. They can be characterized by their symbol, a tensor product in the so-called…
Four-Family Supersymmetric Pati-Salam Models from Intersecting D6-Branes
Tianjun Li, Rui Sun, Chi Zhang
We investigate the construction of four-family supersymmetric Pati-Salam models from Type IIA orientifold with inters…
Functions Beyond Multiple Polylogarithms for Precision Collider Physics
Jacob L. Bourjaily, Johannes Broedel, Ekta Chaubey +14
Feynman diagrams constitute one of the essential ingredients for making precision predictions for collider experiments. Yet, while the simplest Feynman diagrams can be evaluated in…
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…
The elliptic double box and symbology beyond polylogarithms
Alexander Kristensson, Matthias Wilhelm, Chi Zhang
We study the elliptic double-box integral, which contributes to generic massless QFTs and is the only contribution to a particular 10-point scattering amplitude in N=4 SYM theory.…
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…
Notes on Scattering Amplitudes as Differential Forms
Song He, Chi Zhang
Inspired by the idea of viewing amplitudes in SYM as differential forms on momentum twistor space, we introduce differential forms on the space of spinor variables, wh…
Scattering Forms, Worldsheet Forms and Amplitudes from Subspaces
Song He, Gongwang Yan, Chi Zhang +1
We present a general construction of two types of differential forms, based on any -dimensional subspace in the kinematic space of massless particles. The first type i…
Anisotropic Pseudopotential Characterization of Quantum Hall Systems under Tilted Magnetic Field
Bo Yang, Ching Hua Lee, Chi Zhang +1
We analytically derived the effective two-body interaction for a finite thickness quantum Hall system with a harmonic perpendicular confinement and an in-plane magnetic field. The…
One loop amplitude from null string
Ming Yu, Chi Zhang, Yao-Zhong Zhang
We generalize the CHY formalism to one-loop level, based on the framework of the null string theory. The null string, a tensionless string theory, produces the same results as the…
Sharpening Low-Energy, Standard-Model Tests via Correlation Coefficients in Neutron Beta-Decay
S. Gardner, C. Zhang
The correlation coefficients a, A, and B in neutron beta-decay are proportional to the ratio of the axial-vector to vector weak coupling constants, g_A/g_V, to leading recoil order…