73 citations · 115 across the 4 of their papers we have counts for
6 papers
Maximum Probability Domains for Hubbard Models
Guillaume Acke, Stijn De Baerdemacker, Pieter W. Claeys +4
The theory of Maximum Probability Domains (MPDs) is formulated for the Hubbard model in terms of projection operators and generating functions for both exact eigenstates as well as…
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…
An eigenvalue-based method and determinant representations for general integrable XXZ Richardson-Gaudin models
Pieter W. Claeys, Stijn De Baerdemacker, Mario Van Raemdonck +1
We propose an extension of the numerical approach for integrable Richardson-Gaudin models based on a new set of eigenvalue-based variables. Starting solely from the Gaudin algebra,…
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…
Exact solution of the pairing Hamiltonian by deforming the pairing algebra
Mario Van Raemdonck, Stijn De Baerdemacker, Dimitri Van Neck
The present paper makes a connection between collective bosonic states and the exact solutions of the pairing Hamiltonian. This makes it possible to investigate the ef…
Probing pairing correlations in Sn isotopes using Richardson-Gaudin integrability
Stijn De Baerdemacker, Veerle Hellemans, Rianne van den Berg +5
Pairing correlations in the even-even A=102-130 Sn isotopes are discussed, based on the Richardson-Gaudin variables in an exact Woods-Saxon plus reduced BCS pairing framework. The…