Journal of Physics A Mathematical and General

Integrable spin-1/2 XXZ Heisenberg chain with competing interactions

Holger Frahm

Published Mar 21, 1992• 56 citations

Abstract

The critical behaviour of an integrable model of a spin- 1/2 chain with nearest-neighbour XXZ interaction and a competing three-spin interaction involving nearest and next-nearest neighbours is studied. The phase diagram at zero temperature is obtained. Methods from conformal field theory are used to compute the asymptotics of the spin-spin correlation functions.

DOI: 10.1088/0305-4470/25/6/005

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