Electrostatic analogy for integrable pairing force Hamiltonians
The authors study a two-dimensional electrostatic analogy for a class of integrable Hamiltonian given by \textit{L. Amico} et al. [Phys. Rev. Lett. 86, 5759 ff (2001)], and obtain the thermodynamical limit of these Hamiltonians. By generalizing integrals of motion of Bardeen-Cooper-Schrieffer model, the authors are able to extend the class of known integrable pairing-force Hamiltonians. Mathematical aspects connected with the integrability are discussed in an appendix.
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