[qmeso-seminar] семинар сектора 28 июля (понедельник)

[Mikhail A. Skvortsov]

                     СЕМИНАР СЕКТОРА КВАНТОВОЙ МЕЗОСКОПИКИ

           ********* ВНИМАНИЕ: НЕСТАНДАРТНОЕ ВРЕМЯ И МЕСТО *********

                   понедельник 28 июля, 10:00, ИФП им. Капицы


                      E. Sukhorukov (University of Geneve)

            Fermi Edge Singularity in Chiral One-dimensional Systems
                              far from Equilibrium


We study the effects of strong coupling of a localized state charge to
one-dimensional electronic channels out of equilibrium. While the state
of this charge and the coupling strength determine the scattering phase
shifts in the channels, the non-equilibrium partitioning noise induces
the tunneling transitions to the localized state. The strong coupling
leads to a non-perturbative backaction effect which is manifested in the
orthogonality catastrophe and the Fermi edge singularity in the
transition rates. The non-Gaussian component of noise brakes the charge
symmetry, shifting the position of the tunneling resonance depending on
the sign of the dissipative current and the transparency of the noise
emitting partitioning quantum point contact.