Low temperature behavior and crossovers of the square lattice quantum Heisenberg antiferromagnet

被引：147

作者：

Kim, JK ^{[1
]}

Troyer, M

机构：

[1] Univ Georgia, Ctr Simulat Phys, Athens, GA 30602 USA

[2] Univ Tokyo, Inst Solid State Phys, Tokyo 106, Japan

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.80.2705

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present thermodynamic measurements of various physical observables of the two-dimensional S = 1/2 isotropic quantum Heisenberg antiferromagnet on a square lattice, obtained by quantum Monte Carlo methods. The results are in excellent agreement with field-theoretical predictions. The issue of the existence of a crossover from quantum critical to renormalized classical regime is clarified.

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页码：2705 / 2708

页数：4

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