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Mercoledì 29 Aprile alle ore 13.00, Stefan Teufel (University of Tübingen) terrà il seminario di Probabilità e Fisica Matematica dal titolo "Beyond linear response: an Ohm's law for quantum Hall currents".
Abstract: I will present a recent result that establishes a form of Ohm's law for the quantum Hall current in models of interacting fermions on a lattice at zero temperature. I will focus on two novel aspects: defining the Hall current properly in order to go beyond linear response calculations and computing this current to all orders in perturbation theory. These two aspects are both based on the concept of non-equilibrium almost stationary states, a form of 'many-body resonance' for infinite-volume quantum system.
Il seminario si svolgerà in presenza presso il Dipartimento di Matematica e Fisica, Largo San Leonardo Murialdo, 1 - aula B308.
