Integrable lattice hierarchies behind Cauchy two-matrix model and Bures ensemble

SH Li, GF Yu - Nonlinearity, 2022 - iopscience.iop.org
This paper focuses on different reductions of the two-dimensional (2d)-Toda hierarchy.
Symmetric and skew-symmetric moment matrices are first considered, resulting in differential …

Bilinear equations in Darboux transformations by Boson–Fermion correspondence

Y Yang, J Cheng - Physica D: Nonlinear Phenomena, 2022 - Elsevier
Bilinear equation is an important property for integrable nonlinear evolution equation. Many
famous research objects in mathematical physics, such as Gromov–Witten invariants, can be …

Interacting diffusions on positive definite matrices

N O'Connell - Probability Theory and Related Fields, 2021 - Springer
We consider systems of Brownian particles in the space of positive definite matrices, which
evolve independently apart from some simple interactions. We give examples of such …

BKP hierarchy, affine coordinates, and a formula for connected bosonic n-point functions

Z Wang, C Yang - Letters in Mathematical Physics, 2022 - Springer
We derive a formula for the connected n-point functions of a tau-function of the BKP
hierarchy in terms of its affine coordinates. This is a BKP-analogue of a formula for KP tau …

Real line solitons of the BKP equation

JH Chang - arXiv preprint arXiv:2303.02385, 2023 - arxiv.org
The solitons solution of BKP equation can be constructed by the Pfaffian structure. Then one
investigates the real line solitons structure of BKP equation using the totally non-negative …

BKP hierarchy and modified BKP hierarchy

J Cheng - Nonlinear Systems and Their Remarkable …, 2021 - taylorfrancis.com
The highest weight representation of the infinite Lie algebras is used to construct various
soliton equations by the famous Kyoto school. In this chapter, we firstly review the …

Skew-Orthogonal Polynomials and Pfaff Lattice Hierarchy Associated With an Elliptic Curve

W Fu, SH Li - International Mathematics Research Notices, 2024 - academic.oup.com
Starting with a skew-symmetric inner product over an elliptic curve, we propose the concept
of elliptic skew-orthogonal polynomials. Inspired by the Landau–Lifshitz hierarchy and its …

Darboux transformations of the modified BKP hierarchy by fermionic approach

W Guo, M Chen, Y Yang, J Cheng - Journal of Mathematical Physics, 2023 - pubs.aip.org
The modified BKP (mBKP) hierarchy is an important integrable hierarchy related with BKP
hierarchy. Darboux transformation is a powerful method to obtain various solutions of …

Symmetries and bilinear equations for the modified BKP hierarchy

W Guo, W Guan, S Wang, J Cheng - Science China Mathematics, 2023 - Springer
Abstract The modified Kadomtsev-Petviashvili hierarchy of B type (mBKP hierarchy) and its
constrained cases are investigated from the aspect of the Lax formulation. Starting from the …

Pfaffian point processes from free fermion algebras: perfectness and conditional measures

S Koshida - SIGMA. Symmetry, Integrability and Geometry: Methods …, 2021 - emis.de
The analogy between determinantal point processes (DPPs) and free fermionic calculi is
well-known. We point out that, from the perspective of free fermionic algebras, Pfaffian point …