Partial Order and Finite-Temperature Phase Transitions in Potts Models on Irregular Lattices

被引:32
|
作者
Chen, Q. N. [1 ]
Qin, M. P. [2 ]
Chen, J. [2 ]
Wei, Z. C. [2 ]
Zhao, H. H. [2 ]
Normand, B. [3 ]
Xiang, T. [1 ,2 ]
机构
[1] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[3] Renmin Univ China, Dept Phys, Beijing 100872, Peoples R China
关键词
ANTIFERROMAGNET;
D O I
10.1103/PhysRevLett.107.165701
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We evaluate the thermodynamic properties of the 4-state antiferromagnetic Potts model on the Union-Jack lattice using tensor-based numerical methods. We present strong evidence for a previously unknown, "entropy-driven," finite-temperature phase transition to a partially ordered state. From the thermodynamics of Potts models on the diced and centered diced lattices, we propose that finite-temperature transitions and partially ordered states are ubiquitous on irregular lattices.
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页数:5
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