Integrability and exact solution for coupled BCS systems associated with the $su(4)$ Lie algebra
Date
2002
Authors
Guan, Xi-Wen
Foerster, Angela
Links, Jon
Zhou, H-Q.
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Publisher
Elsevier
Abstract
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.
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Keywords
Keywords: BCS model; Cooper pair; Ground state; Quantum R-matrix
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Source
Nuclear Physics B
Type
Journal article
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Restricted until
2037-12-31
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