Finite-size scaling in the spin-1/2 XY model on a square lattice

被引：14

作者：

Hamer, CJ ^{[1
]}

Hövelborn, T

Bachhuber, M

机构：

[1] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

[2] Univ Bonn, Inst Angew Math, D-53115 Bonn, Germany

[3] Fachhsch Regensburg, Fachrichtung Math, D-93049 Regensburg, Germany

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1999年 / 32卷 / 01期

关键词：

D O I：

10.1088/0305-4470/32/1/007

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Energy eigenvalues and order parameters are calculated by exact diagonalization for the isotropic spin-1/2 XY model on square lattices of up to 6 x 6 sites. The finite-size scaling behaviour is in excellent agreement with the effective Lagrangian predictions of Hasenfratz and Niedermayer (Hasenfratz P and Niedermayer F 1993 Z Phys. B 92 91). Estimates are obtained for the bulk ground-state energy per site, the spontaneous magnetization, the spin-wave velocity and the spin-wave stiffness.

引用

页码：51 / 59

页数：9

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