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The SU(ν) generalized Haldane-Shastry spin chain with 1/r 2 interaction is studied with twisted boundary conditions. The exact wave functions of the Jastrow type are obtained for every rational value of the twist angle in units of 2π. The spectral flow of the ground state is then discussed as a function of the twist angle. By resorting to the motif picture in the Bethe ansatz method, we...
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