3 papers
hep-th2026
Algebraic versus physical uniqueness of MHV gravity numerators
Lin Mai, Yaobo Zhang
We study whether a tree-level MHV gravity numerator is determined by its degree and by vanishing on for every pair. A flag-variety standard-monomial basi…
hep-th2026
An adaptive inverse-problem framework for one-loop five-gluon BCJ numerators
Lin Mai, Yaobo Zhang
An inverse problem comprises a matrix equation together with its unknown space, physical data, equivalence relation, and validation tests. We formulate Bern--Carrasco--Johansson (B…
hep-th2025
Exact CHY Integrand Construction Using Combinatorial Neural Networks and Discrete Optimization
Simeng Li, Yaobo Zhang
Constructing a rational CHY integrand that realizes prescribed physical pole constraints is a discrete inverse problem whose combinatorial complexity grows with multiplicity. We en…