Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2002-05-07
Nucl. Phys. B 642 (2002) 501-514
Physics
Condensed Matter
Strongly Correlated Electrons
15 pages
Scientific paper
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.
Foerster Angela
Guan X.-W.
Links Jon
Zhou Huan-Qiang
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