Exact low temperature results for transport properties of the interacting resonant level model

TL;DR

This paper provides an exact characterization of the low temperature transport properties of the anisotropic interacting resonant level model using conformal field theory and integrability, revealing Coulomb deblocking effects.

Contribution

It offers the first exact low temperature corrections to conductance up to sixth order for the IRLM using advanced theoretical methods.

Findings

Exact low temperature conductance corrections up to sixth order.

Identification of Coulomb deblocking at resonance.

Enhanced conductance due to impurity-wire capacitive coupling.

Abstract

Using conformal field theory and integrability ideas, we give a full characterization of the low temperature regime of the anisotropic interacting resonant level (IRLM) model. We determine the low temperature corrections to the linear conductance exactly up to the 6th order. We show that the structure displays 'Coulomb deblocking' at resonance, i.e., a strong impurity-wire capacitive coupling enhances the conductance at low temperature.