Unstable particles versus resonances in impurity systems, conductance in quantum wires

Castro-Alvaredo, O. & Fring, A. (2002). Unstable particles versus resonances in impurity systems, conductance in quantum wires. Journal of Physics: Condensed Matter, 14(47), doi: 10.1088/0953-8984/14/47/101

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Abstract

We compute the DC conductance for a homogeneous sine–Gordon model and an impurity system, which in the conformal limit can be reduced to a Luttinger liquid, 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.

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: School of Engineering & Mathematical Sciences > Department of Mathematical Science
URI: http://openaccess.city.ac.uk/id/eprint/720

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