Critical Behaviour of integrable mixed spins chains
S. R. Aladim, M. J. Martins
Abstract
We construct a mixed spin 1/2 and S integrable model and investigate its finite size properties. For a certain conformal invariant mixed spin system the central charge can be decomposed in terms of the conformal anomaly of two single integrable models of spin 1/2 and spin (S-1/2). We also compute the ground state energy and the sound velocity in the thermodynamic limit.
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