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Nonequilibrium transport through double quantum dots: exact results near a quantum critical point
1Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada, V6T 1Z1.
Abstract:
While violations of the Fermi liquid paradigm for metals are of great interest in various physical systems, quantum impurity models are among the few cases where exact theoretical results are available. Double quantum dots can provide an experimental realization of the 2 impurity Kondo model which exhibits a non-Fermi-liquid quantum critical point at a special value of its parameters. We present an exact universal result for the finite temperature nonlinear conductance along the crossover from this quantum critical point to the low energy Fermi liquid phase.
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