Thermal Transport in One-Dimensional FPU-FK Lattices

被引：0
|
作者：
Zhao Yuan [1 ]
Xue Bao-Xue [1 ]
Wang Yan-Mei [1 ]
Yi Lin [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Peoples R China
来源：
COMMUNICATIONS IN THEORETICAL PHYSICS | 2009年 / 52卷 / 03期
关键词：
heat conduction; nonlinear dynamics; transport processes; HEAT-CONDUCTION; DYNAMICS; CHAINS;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Thermal transport in the FPU model with FK on-site potential is studied by using fourth-order Runge-Kutta algorithm. The heat flux, local temperature profile, and heat conductivity are simulated and analyzed. It is found that temperature gradient scales behave as N-1 linearly. The divergence of heat conductivity k with system size N is in term of k proportional to N-alpha with alpha = 0.44. It is shown that thermal transport is mainly dependent on the FPU nonlinear and the FK interactions.
引用
收藏
页码：507 / 510
页数：4
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