Finite temperature Drude weight of the one dimensional spin 1/2 Heisenberg model}

Preprint

2 November 1998

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9811013

Abstract

Using the Bethe ansatz method, the zero frequency contribution (Drude weight) to the spin current correlations is analyzed for the easy plane antiferromagnetic Heisenberg model. The Drude weight is a monotonically decreasing function of temperature for all 0<Delta< 1, it approaches the zero temperature value with a power law and it appears to vanish for all finite temperatures at the isotropic Delta=1 point.

Keywords

FINITE TEMPERATURES
TEMPERATURE DRUDE
ANTIFERROMAGNETIC
HEISENBERG MODEL
MONOTONICALLY
CORRELATIONS
DRUDE WEIGHT

All Related Versions

Version 1, 1998-11-02, ArXiv
Published version: Physical Review Letters, 82 (8), 1764.

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