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

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arxiv cond-mat/0105203 v1 pith:ID5IU4RY submitted 2001-05-09 cond-mat.str-el cond-mat.stat-mech

A. Foerster , M. D. Gould , X.-W. Guan , I. Roditi , H.-Q Zhou This is my paper
classification cond-mat.str-elcond-mat.stat-mech
keywords boundaryintegrablethreeansatzbarievbethechainsconditions
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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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