二层Ising模型的短时临界动力学性质

SHORT-TIME CRITICAL DYNAMIC PROCESS OF TWO-LAYER ISING MODEL 

采用动力学MonteCarlo方法研究了二层Ising模型的临界性质及早期动力学标度行为 .结果表明层间耦合不为零时也存在临界点 ;计算了早期动力学临界指数θ;估计了传统的临界指数 1/νz .其结果支持临界线存在的猜想 。

Monte Carlo simulations of critical dynamics has been used to study the short\|time process and scaling behavior of two\|layer Ising model. The result shows that there are critical points even when the coupling between the two layers is not equal to zero; the short\|time dynamic critical exponent θ was determined; the traditional critical exponent 1/ νz was estimated also.Our result encouraged the supposition of the existence of the critical line and evidenced that this model was likely a weak universal model.