Critical Properties of the XXZ chain in External Staggered Magnetic Field

TL;DR

This paper discusses the critical properties of the spin-1/2 XXZ chain subjected to an external staggered magnetic field, analyzing phase boundaries and critical behavior using finite-size numerical methods.

Contribution

It comments on recent work regarding the critical properties of the XXZ chain in a staggered magnetic field and discusses methods for determining phase boundaries.

Findings

Analysis of phase boundary determination methods

Insights into critical behavior of the XXZ chain

Discussion on finite-size numerical data interpretation

Abstract

We comment on the recent work of Alcaraz and Malvezzi [1995 {\it J. Phys. A: Math. Gen.} {\bf 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.