32 citations · 228 across the 16 of their papers we have counts for
17 papers
Landau-based Schubert analysis
Song He, Xuhang Jiang, Jiahao Liu +1
We revisit the conjectural method called Schubert analysis for generating the alphabet of symbol letters for Feynman integrals, which was based on geometries of intersecting lines…
From squared amplitudes to energy correlators
Song He, Xuhang Jiang, Qinglin Yang +1
The leading order -point energy correlators of maximally supersymmetric Yang-Mills theory in the limit where the detectors are collinear can be expressed as an integral of t…
Differential equations and recursive solutions for cosmological amplitudes
Song He, Xuhang Jiang, Jiahao Liu +2
Recently considerable efforts have been devoted to computing cosmological correlators and the corresponding wavefunction coefficients, as well as understanding their analytical str…
On symbology and differential equations of Feynman integrals from Schubert analysis
Song He, Xuhang Jiang, Jiahao Liu +1
We take the first step in generalizing the so-called "Schubert analysis", originally proposed in twistor space for four-dimensional kinematics, to the study of symbol letters and m…
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…
The symbology of Feynman integrals from twistor geometries
Song He, Jiahao Liu, Yichao Tang +1
We study the symbology of planar Feynman integrals in dimensional regularization by considering geometric configurations in momentum twistor space corresponding to their leading si…
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…
Schubert Problems, Positivity and Symbol Letters
Qinglin Yang
We propose a geometrical approach to generate symbol letters of amplitudes/integrals in planar Super Yang-Mills theory, known as {\it Schubert problems}. Beginning…
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…
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…
Triangulations for ABHY Polytopes and Recursions for Tree and Loop Amplitudes
Qinglin Yang
In this note we make a field-theoretical derivation of a series of new recursion relations by a one-parameter deformation of kinematic variables for tree and one-loop amplitudes of…
An Etude on Recursion Relations and Triangulations
Song He, Qinglin Yang
Following~\cite{Arkani-Hamed:2017thz}, we derive a recursion relation by applying a one-parameter deformation of kinematic variables for tree-level scattering amplitudes in bi-adjo…