Power-Law Behavior in Signal Scattering Process in Vertical Granular Chain with Light Impurities

作     者：XU Ai-Guo 

作者机构：Department of Physics and Center for Strongly Correlated Materials Research Seoul National University Seoul 151-742.Korea 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2001年第36卷第12期

页      面：699-704页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：korea research foundation grant krf-2000-dp0106 韩国教育部bk21工程 

主　　题：granular chain, scattering process, power-law behavior, reflection rate 

摘      要：We investigate the scattering process of impulse in vertical granular chain with light impurities. When the perturbation is weak, the quantities describing the reflection rate exhibit power-law behavior with the impurity depth. The exponent is nearly independent of vi. When the perturbation is very strong, the vertical chain shows similar behavior to that of the horizontal chain, so the exponent is nearly zero. Our numerical investigation begins from the weak perturbation region and extends to the nonlinear region and found a peak of the exponent. The difficulty in extending the numerical investigation to a stronger perturbation region is *** numbers: 45.70.-n, 43.25.+y, 46.40.