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

页码：507 / 510

页数：4

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