Quantum hydrodynamic modes in one-dimensional polaron system

被引：6

作者：

Tanaka, Satoshi ^{[1
]}

Kanki, Kazuki ^{[1
]}

Petrosky, Tomio ^{[2
]}

机构：

[1] Osaka Prefecture Univ, Dept Phys Sci, Sakai, Osaka 5998531, Japan

[2] Univ Texas Austin, Ctr Quantum Complex Syst, Austin, TX 78712 USA

来源：

JOURNAL OF LUMINESCENCE | 2008年 / 128卷 / 5-6期

关键词：

one-dimensional polaron; kinetic theory; relaxation dynamics; hydrodynamics; quantum sound mode;

D O I：

10.1016/j.jlumin.2007.12.022

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dynamical relaxation process of one-dimensional polaron system weakly coupled with a thermal phonon field is theoretically investigated. In addition to the diffusion relaxation, we have found that there appears a new macroscopic quantum sound mode which stabilizes the wave packet of the quantum particle even under the random collision with the thermal phonon. This coherent sound mode is a new hydrodynamic mode obeying a macroscopic linear wave equation for the density of the particle, instead of wave function. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：978 / 981

页数：4

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