Critical Properties of the XXZ chain in External Staggered Magnetic Field
Abstract
We comment on the recent work of Alcaraz and Malvezzi [1995 J. Phys. A: Math. Gen. 19 1521] for the critical properties of the S=1/2 XXZ chain in staggered magnetic field. The method of determining the phase boundary from the finite-size numerical data is also discussed.
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