Lattice regularization of massive and massless integrable field theories
classification
✦ hep-th
keywords
fieldtheorieslatticemassivemasslessintegrableregularizationansatz
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We show that integrable vertex and RSOS models with trigonometric Boltzmann weights and appropriate inhomogeneities provide a convenient lattice regularization for massive field theories and for the recently studied massless field theories that interpolate between two non trivial conformal field theories. Massive and massless S matrices are computed from the lattice Bethe ansatz.
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