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Integrability and exact solution for coupled BCS systems associated with the $su(4)$ Lie algebra

Guan, Xi-Wen; Foerster, Angela; Links, Jon; Zhou, H-Q.


We introduce an integrable model for two coupled BCS systems through a solution of the Yang-Baxter equation associated with the Lie algebra su(4). By employing the algebraic Bethe ansatz, we determine the exact solution for the energy spectrum. An asymptotic analysis is conducted to determine the leading terms in the ground state energy, the gap and some one point correlation functions at zero temperature.

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Nuclear Physics B
DOI: 10.1016/S0550-3213(02)00776-9


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