Low Temperature Transport Properties of Strongly Interacting Systems — Thermal Conductivity of Spin‐1/2 Chains
作者:
N. Andrei,
E. Shimshoni,
A. Rosch,
期刊:
AIP Conference Proceedings
(AIP Available online 1903)
卷期:
Volume 695,
issue 1
页码: 315-326
ISSN:0094-243X
年代: 1903
DOI:10.1063/1.1639599
出版商: AIP
数据来源: AIP
摘要:
We outline a general approach to the computation of transport properties of interacting systems at low temperetures and frequencies. We show that if the fixed point and the irrelevant operators around it are known, then by studying the structure of the softly violated conserved currents chracterizing the fixed point one may set up an effective calculation in terms of a memory matrix formalism. We apply this approach to the computation of thermal conductivity of spin chains embedded in a matter matrix and interacting with its phonons. The results are found to be in very good agreement with experiment. © 2003 American Institute of Physics
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