Heisenberg 链中的低温输运
凝聚态物理
2009-11-07 v3
摘要
presented a technique to determine accurately transport properties of integrable and non-integrable quantum-spin chains at finite temperatures by Quantum Monte-Carlo is. The reduction of the Drude weight by interactions in the integrable gapless regime is evaluated. Evidence for the absence of a Drude weight in the gapless regime of a non-integrable system with longer-ranged interactions is presented. We estimate the effect of the non-integrability on the transport properties and compare with recent experiments on one-dimensional quantum-spin chains.
引用
@article{arxiv.cond-mat/0105585,
title = {Low-temperature transport in Heisenberg chains},
author = {J. V. Alvarez and Claudius Gros},
journal= {arXiv preprint arXiv:cond-mat/0105585},
year = {2009}
}
备注
accepted for publication (PRL)