Unstable particles versus resonances in impurity systems, conductance in quantum wires
Condensed Matter
2007-05-23 v2 High Energy Physics - Theory
Abstract
We compute the DC conductance for a homogeneous sine-Gordon model and an impurity system of Luttinger liquid type by means of the thermodynamic Bethe ansatz and standard potential scattering theory. We demonstrate that unstable particles and resonances in impurity systems lead to a sharp increase of the conductance as a function of the temperature, which is characterized by the Breit-Wigner formula.
Keywords
Cite
@article{arxiv.cond-mat/0112199,
title = {Unstable particles versus resonances in impurity systems, conductance in quantum wires},
author = {O. A. Castro-Alvaredo and A. Fring},
journal= {arXiv preprint arXiv:cond-mat/0112199},
year = {2007}
}
Comments
5 pages Latex, 1 figure replaced, version to appear in J. Phys. C