Finite-temperature mobility of a particle coupled to a fermionic environment

被引：16

作者：

Castella, H ^{[1
]}

Zotos, X ^{[1
]}

机构：

[1] INST ROMAND RECH NUMER PHYS MAT, PHB ECUBLENS, CH-1015 LAUSANNE, SWITZERLAND

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.54.4375

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study numerically the finite-temperature and frequency mobility of a particle coupled by a local interaction to a system of spinless fermions in one dimension. We find that when the model is integrable(particle mass equal to the mass of fermions) the static mobility diverges. Further, an enhanced mobility is observed over a finite parameter range away from the integrable point. We. present an analysis of the finite-temperature static-mobility based on a random matrix theory description of the many-body Hamiltonian.

引用

页码：4375 / 4378

页数：4

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