摘要
使用动力学重整化群和直接标度分析的方法研究了非局域Lai DasSarma Villain方程的动力学标度性质 .动力学重整化群分析表明非局域非线性项的存在能够导致新的固定点和连续变化的动力学标度指数的产生 .使用直接标度分析方法则分别得到了在弱耦合和强耦合区内的标度指数值 .在弱耦合区域内得到的标度指数与动力学重整化方法得到的标度指数值能很好地吻合 .
The scaling properties of the nonlocal Lai-Das Sarma-Villain equation are studied by using dynamic renormalization-group (DRG) analysis and scaling approach, respectively. The DRG analysis shows that the nonlocal nature of the nonlinear term can produce new fixed points with continuously varying exponents, depending on both the nonlocal interaction parameter p and the substrate dimension d. The scaling exponents in both weak- and strong-coupling regions are obtained by scaling approach,The exponents obtained in the weak-coupling region well match the results of the DRG analysis.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第5期851-855,共5页
Acta Physica Sinica
基金
教育部博士点基金(批准号 :960 0 2 70 3 )&&
