SEMINAIRE MERCREDI 7 NOVEMBRE 2007
14 heures
Salle Séminaire 5
Centre de Physique Théorique
Marseille-Luminy

Natan Andrei
Rutgers University

Title: Quantum impurities out of equilibrium: currents and
entropy production

Abstract: We develop an exact non-perturbative framework to compute
steady state properties of quantum-impurities connected to leads
subject to finite bias. We show that the steady-state physics of these
systems is captured by nonequilibrium scattering eigenstates defined
on the infinite open line with boundary conditions set by the leads.
Introducing the Scattering Bethe Ansatz (SBA), a generalization to the
open system of the traditional Bethe Ansatz, we show how to explicitly
construct the fully interacting, current-carrying and entropy
producing scattering eigenstates. As an example we derive exact
results for the steady state properties of the Interacting Resonance
Level model.