An Exactly Solvable Constrained XXZ Chain

Details An Exactly Solvable Constrained XXZ Chain An Exactly Solvable Constrained XXZ Chain

1999-04-02

arxiv.org/abs/cond-mat/9904042v1

Physics

Condensed Matter

Statistical Mechanics

13 pages with 3 figures included inm ain tex. To appear in the Proceedings of the Conference: Statistical Physics on the Eve o

Scientific paper

A new family of exactly solvable models is introduced. These models are generalizations of the XXZ chain where the distance among spins up ($\sigma^z$-basis) cannot be smaller or equal to t (t=0,1,2,...). The case t=0 recovers the standard XXZ chain. The coordinate Bethe ansatz is applied and the phase diagram is calculated. Exploring the finite-size consequences of conformal invariance the critical exponents are evaluated exactly at the critical regions of the phase diagram

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