Thermoelectric Transport in a Three-Channel Charge Kondo Circuit

We theoretically investigate the thermoelectric transport through a circuit implementation of the three-channel charge Kondo model quantum simulator [Z. Iftikhar et al., Science 360, 1315 (2018)]. The universal temperature scaling law of the Seebeck coefficient is computed perturbatively approaching the non-Fermi liquid strong coupling fixed point using the Abelian bosonization technique. The predicted T-1/3 log T scaling behavior of the thermoelectric power sheds light on the properties of Z 3 emerging parafermions and gives access to exploring prefractionalized zero modes in the quantum transport experiments. We discuss a generalization of approach for investigating a multichannel Kondo problem with emergent Z(N) -> Z(M) crossovers between "weak" non-Fermi liquid regimes corresponding to different low-temperature fixed points.