Conductivity of quantum spin chains: A quantum Monte Carlo approach

被引：0

作者：

Alvarez, JV ^{[1
]}

Gros, C ^{[1
]}

机构：

[1] Univ Saarland, Fak 7, D-66041 Saarbrucken, Germany

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 09期

关键词：

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We discuss zero-frequency transport properties of various spin-1/2 chains. We show that a careful analysis of quantum Monte Carlo data on the imaginary axis allows to distinguish between intrinsic ballistic and diffusive transport. We determine the Drude weight, current-relaxation lifetime, and the mean free path for integrable and nonintegrable quantum spin chains. We discuss, in addition, some phenomenological relations between various transport-coefficients and thermal response functions.

引用

页数：9

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