正负晶场作用的键稀疏BC模型的相变特性

Phase transitions properties of positive or negative crystal field and bond dilution BC Model

在有效场框架下,对正负晶场作用的键稀疏BC模型(BCM)的相变进行了研究.具体分析了三临界点(TCP)随正负晶场和键稀疏这两种无序因子的变化关系及相变曲线呈现的一些新特征,给出了相应的相图.

The phase diagrams of positive or negative crystal field and bond dilution Blume-Capel Model （BCM） have been studied within the framework of an effective field theory. The trajectory of the tricritical point （TCP） in the phase space as a function of two different disorder parameters is analyzed. The phase diagrams are presented.