209 citations · 1.3k across the 54 of their papers we have counts for
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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…
Richardson-Gaudin models and broken integrability
Pieter W. Claeys
This thesis presents an introduction to the class of Richardson-Gaudin integrable models, with special focus on the Bethe ansatz wave function, and investigates ways of applying th…
Inner products in integrable Richardson-Gaudin models
Pieter W. Claeys, Dimitri Van Neck, Stijn De Baerdemacker
We present the inner products of eigenstates in integrable Richardson-Gaudin models from two different perspectives and derive two classes of Gaudin-like determinant expressions fo…
Eigenvalue-based determinants for scalar products and form factors in Richardson-Gaudin integrable models coupled to a bosonic mode
Pieter W. Claeys, Stijn De Baerdemacker, Mario Van Raemdonck +1
Starting from integrable (quasi-)spin Richardson-Gaudin XXZ models we derive several properties of integrable spin models coupled to a bosonic mode. We focus on the Dicke-J…
The Dicke model as the contraction limit of a pseudo-deformed Richardson-Gaudin model
Pieter W. Claeys, Stijn De Baerdemacker, Mario Van Raemdonck +1
The Dicke model is derived in the contraction limit of a pseudo-deformation of the quasispin algebra in the su(2)-based Richardson-Gaudin models. Likewise, the integrability of the…