LINEAR RESPONSE OF ONE DIMENSIONAL NON-LINEAR SYSTEM .1. DYNAMICAL PROPERTIES OF THE PHI-4-CHAIN

被引：12

作者：

IMADA, M

机构：

[1] Department of Physics, Faculty of Science, University of Tokyo, Bunkyo-ku, Tokyo

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1979年 / 47卷 / 03期

关键词：

D O I：

10.1143/JPSJ.47.699

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The linear response theory of the one dimensional nonlinear systems is formulated in the limit of the overdamping. Transfer integral method is applied to investigate the dynamical structure factor S (k =0, ω). The equation of motion for the distribution function is reduced to a set of independent equations for normal modes. As an example the structure factor for the φ4 chain is calculated to be the sum of a very narrow central peak and a broad overdamped phonon peak. The origin of the former is supposed to be the domain wall motion. © 1979, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

引用

页码：699 / 705

页数：7

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