Generalized Wiedemann-Franz law in a two-site charge Kondo circuit: Lorenz ratio as a manifestation of the orthogonality catastrophe

Abstract

We show that the transport integrals of the two-site charge Kondo circuits connecting various multi-channel Kondo simulators satisfy the generalized Wiedemann-Franz law with the universal Lorenz ratios all greater than one. The magic Lorenz ratios are directly related to the Anderson's orthogonality catastrophe in quantum simulators providing some additional universal measure for the strong electron-electron correlations. We present a full fledged theory for the magic Lorenz ratios and discuss possible routes for the experimental verifications of the theory.

arXiv comment6 pages, 1 figure

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Cited by in corpus (5)

• Thermoelectric transport across a tunnel contact between two charge Kondo circuits: beyond perturbation theory
• Universal relations between thermoelectrics and noise in mesoscopic transport across a tunnel junction
• Breakdown of the Wiedemann-Franz law in an interacting quantum Hall metamaterial
• Tunneling in multi-site mesoscopic quantum Hall circuits
• Noise signatures of a charged Sachdev-Ye-Kitaev dot in mesoscopic transport