Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, China.
Phys Rev Lett. 2011 Oct 14;107(16):165701. doi: 10.1103/PhysRevLett.107.165701. Epub 2011 Oct 12.
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.
我们使用基于张量的数值方法评估了联合杰克晶格上 4 态反铁磁 Potts 模型的热力学性质。我们提供了强有力的证据，证明存在一个以前未知的、“熵驱动”的有限温度相变为部分有序状态。从切块和中心切块晶格上的 Potts 模型热力学出发，我们提出有限温度跃迁和部分有序状态在不规则晶格上是普遍存在的。
