2 papers
math.PR2025
Stationary inverse-Wishart polymers
Guillaume Barraquand, Zikun Ouyang
A solvable model of directed polymer with matrix-valued disorder is introduced in arXiv:2203.14868. The disorder is made of inverse-Wishart random matrices, so that the…
math.RA2023
Generalized unistochastic matrices
Ion Nechita, Zikun Ouyang, Anna Szczepanek
We study a class of bistochastic matrices generalizing unistochastic matrices. Given a complex bipartite unitary operator, we construct a bistochastic matrix having as entries the…