Integrable open boundary conditions for the Bariev model of three coupled XY spin chains

Details Integrable open boundary conditions for the Bariev model of three coupled XY spin chains Integrable open boundary conditions for the Bariev model of three coupled XY spin chains

2001-05-09

arxiv.org/abs/cond-mat/0105203v1

Nuclear Physics B, issue 612 (3) [FS], pp. 461-478,

Physics

Condensed Matter

Strongly Correlated Electrons

21 pages, no figures

Scientific paper

10.1016/S0550-3213(01)00354-6

The integrable open-boundary conditions for the Bariev model of three coupled one-dimensional XY spin chains are studied in the framework of the boundary quantum inverse scattering method. Three kinds of diagonal boundary K-matrices leading to nine classes of possible choices of boundary fields are found and the corresponding integrable boundary terms are presented explicitly. The boundary Hamiltonian is solved by using the coordinate Bethe ansatz technique and the Bethe ansatz equations are derived.

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