Equilibrium Fermi-liquid coefficients for the fully screened N-channel Kondo model

Abstract

We analytically and numerically compute three equilibrium Fermi-liquid coefficients of the fully screened $N$-channel Kondo model, namely $c_B$, $c_T$ and $c_{\epsilon }$, characterizing the magnetic field and temperature dependence of the resisitivity, and the curvature of the equilibrium Kondo resonance, respectively. We present a compact, unified derivation of the $N$-dependence of these coefficients, combining elements from various previous treatments of this model. We numerically compute these coefficients using the numerical renormalization group, with non-Abelian symmetries implemented explicitly, finding agreement with Fermi-liquid predictions on the order of 5% or better.

12 pages, 3 figures, published version

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• Thermoelectric Transport through SU(N) Kondo Impurity
• Adaptive variational quantum minimally entangled typical thermal states for finite temperature simulations
• QSpace - An open-source tensor library for Abelian and non-Abelian symmetries
• Quantum thermoelectric and heat transport in the overscreened Kondo regime: Exact conformal field theory results
• Full counting statistics of the two-stage Kondo effect
• Leading temperature dependence of the conductance in Kondo-correlated quantum dots
• Multistage Kondo effect in a multiterminal geometry: A modular quantum interferometer
• Transmission phase evolution in fully screened and overscreened Kondo impurities
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