EXACT RESULTS FOR THE CRITICAL-BEHAVIOR OF A NIENHUIS O(N) MODEL ON THE SQUARE LATTICE

被引：7

作者：

BATCHELOR, MT

机构：

[1] Dept. of Math., Sch. of Math. Sci., Australian Nat. Univ., Canberra, ACT

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1993年 / 26卷 / 15期

关键词：

D O I：

10.1088/0305-4470/26/15/023

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Exact results are obtained for a square lattice fifteen-vertex model and related O(n) model recently proposed by Nienhuis. The partition function per site and finite-size corrections are obtained, along with the critical exponents via the Temperley-Lieb equivalent six-vertex model. The exact exponents nu = 4/7 and gamma = 6/7 follow in the limit n = 0 for even system sizes. Odd system sizes are also discussed. The fifteen-vertex model is also the vertex formulation of the anisotropic, or q-deformed, spin-1 biquadratic model.

引用

页码：3733 / 3740

页数：8