New spectral-parameter dependent solutions of the Yang-Baxter equation

TL;DR

This paper introduces a new algorithm to find spectral-parameter dependent solutions of the Yang-Baxter equation, focusing on two-qubit systems, with potential applications in quantum and classical integrable models.

Contribution

The authors develop an algorithm to generate nearly exhaustive solutions of the YBE for two-qubit systems, enabling the discovery of new integrable models.

Findings

Developed an algorithm for YBE solutions in two-qubit systems

Generated new spectral-parameter dependent solutions of the YBE

Potential to extend solutions to higher-dimensional systems

Abstract

The Yang-Baxter Equation (YBE) plays a crucial role for studying integrable many-body quantum systems. Many known YBE solutions provide various examples ranging from quantum spin chains to superconducting systems. Models of solvable statistical mechanics and their avatars are also based on YBE. Therefore, new solutions of the YBE could be used to construct new interesting 1D quantum or 2D classical systems with many other far-reaching applications. In this work, we attempt to find (almost) exhaustive set of solutions for the YBE in the lowest dimensions corresponding to a two-qubit case. We develop an algorithm, which can potentially be used for generating new higher-dimensional solutions of the YBE.