2 papers
math-ph2018
Integrable spin-1/2 Richardson-Gaudin XYZ models in an arbitrary magnetic field
Pieter W. Claeys, Claude Dimo, Stijn De Baerdemacker +1
We establish the most general class of spin-1/2 integrable Richardson-Gaudin models including an arbitrary magnetic field, returning a fully anisotropic (XYZ) model. The restrictio…
math-ph2018
Quadratic operator relations and Bethe equations for spin-1/2 Richardson-Gaudin models
Claude Dimo, Alexandre Faribault
In this work we demonstrate how one can, in a generic approach, derive a set of simple quadratic Bethe equations for integrable Richardson-Gaudin (RG) models built out of s…