Quantum-classical crossover in the spin-1/2 XXZ chain

Article

关键词: FINITE-TEMPERATURE CORRELATIONS;    HEISENBERG CHAIN;    TRANSVERSE FIELD;    ISING CHAIN;    MODEL;    ANTIFERROMAGNET;    UNIVERSAL;   

DOI  :  10.1103/PhysRevB.59.381

来源: SCIE

【 摘 要 】

We compute, by means of exact diagonalization of systems of N = 16 and 18 spins, the correlation function [sigma(0)(z)sigma(n)(z)] at nonzero temperature for the XXZ model with anisotropy Delta. In the gapless attractive region -1

【 授权许可】

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