Tunable Kondo-Luttinger systems far from equilibrium
arXiv:1002.1757 · doi:10.1103/PhysRevB.82.115325
Abstract
We theoretically investigate the non-equilibrium current through a quantum dot coupled to one- dimensional electron leads, utilizing a controlled frequency-dependent renormalization group (RG) approach. We compute the non-equilibrium conductance for large bias voltages and address the interplay between decoherence, Kondo entanglement and Luttinger physics. The combined effect of large bias voltage and strong interactions in the leads, known to stabilize two-channel Kondo physics, leads to non-trivial modifications of the conductance. For weak interactions, we build an analogy to a dot coupled to helical edge states of two-dimensional topological insulators.
4 pages, 4 figures
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- Correlations in non-equilibrium Luttinger liquid and singular Fredholm determinants
- Non-equilibrium quantum transport through a dissipative resonant level
- Quantum criticality out of equilibrium in the pseudogap Kondo model
- Quantum criticality in Kondo quantum dot coupled to helical edge states of interacting 2D topological insulators
- Dynamical properties of a nonequilibrium quantum dot close to localized-delocalized quantum phase transitions