Thermal Transport in One-Dimensional FPU-FK Lattices  

作　　者：ZHAO Yuan XUE Bao-Xue WANG Yan-Mei YI Lin 

机构地区：[1]School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China

出　　处：《Communications in Theoretical Physics》2009年第9期507-510,共4页理论物理通讯（英文版）

基　　金：Supported by the Natural Science Foundation of China under Grant No.10774053;the Natural Science Foundation of Hubei Province of China under Grant No.2007ABA035

摘　　要：Thermal transport in the FPU model with Kutta algorithm. The heat flux, local temperature profile, that temperature gradient scales behave as N-1 linearly. FK on-site potential is studied by using fourth-order Runge- and heat conductivity axe simulated and analyzed. It is found The divergence of heat conductivity ~ with system size N is in term of κ ∝ N^α with α = 0.44. It is shown that thermal transport is mainly dependent on the FPU nonlinear and the FK interactions.

关 键 词：heat conduction nonlinear dynamics transport processes 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构] O413[自动化与计算机技术—计算机科学与技术]