1ST-ORDER AND 2ND-ORDER PHASE-TRANSITIONS IN POTTS MODELS - RENORMALIZATION-GROUP SOLUTION

被引：342

作者：

NIENHUIS, B ^{[1
]}

BERKER, AN ^{[1
]}

RIEDEL, EK ^{[1
]}

SCHICK, M ^{[1
]}

机构：

[1] HARVARD UNIV,DEPT PHYS,CAMBRIDGE,MA 02138

来源：

PHYSICAL REVIEW LETTERS | 1979年 / 43卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.43.737

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A generalization of the Niemeijer-van Leeuwen renormalization-group transformation treating disordered cells of spins as vacancies is introduced and applied to the two-dimensional q-state Potts model. Finite-lattice approximations yield the changeover from continuous to first-order phase transitions predicted by Baxter but not observed in previous renormalization-group calculations. Exact results are conjectured for the tricritical exponents of dilute Potts models. © 1983 The American Physical Society.

引用

页码：737 / 740

页数：4

共 22 条

[1] CRITICAL BEHAVIOR OF DISCRETE SPIN CUBIC MODEL [J].