EXACT MULTICRITICAL BEHAVIOR OF THE POTTS-MODEL

被引：11

作者：

NIENHUIS, B ^{[1
]}

WARNAAR, SO ^{[1
]}

BLOTE, HWJ ^{[1
]}

机构：

[1] TECH UNIV DELFT, TECH FYS LAB, 2600 GA DELFT, NETHERLANDS

来源：

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1993年 / 26卷 / 03期

关键词：

D O I：

10.1088/0305-4470/26/3/013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A two-dimensional q-state Potts model with vacancies and four-spin interactions is studied. The parameter space of the model contains a critical and a tricritical manifold. Moreover for 0 less-than-or-equal-to q less-than-or-equal-to 9/4 a multicritical point is found which is the locus where the tricritical transition changes from first- to second-order. At this multicritical point, which can be located exactly, the model is solvable. We compute the value of the central charge and a number of critical exponents.

引用

页码：477 / 493

页数：17

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