Intriguing Heat Conduction of a Polymer Chain
Statistical Mechanics
2009-11-10 v1
Abstract
We study heat conduction in a one-dimensional chain of particles with longitudinal as well as transverse motions. The particles are connected by two-dimensional harmonic springs together with bending angle interactions. Using equilibrium and nonequilibrium molecular dynamics, three types of thermal conducting behaviors are found: a logarithmic divergence with system sizes for large transverse coupling, 1/3 power-law at intermediate coupling, and 2/5 power-law at low temperatures and weak coupling. The results are consistent with a simple mode-coupling analysis of the same model. The 1/3 power-law divergence should be a generic feature for models with transverse motions.
Cite
@article{arxiv.cond-mat/0308445,
title = {Intriguing Heat Conduction of a Polymer Chain},
author = {Jian-Sheng Wang and Baowen Li},
journal= {arXiv preprint arXiv:cond-mat/0308445},
year = {2009}
}
Comments
4 pages