Jan van Ruitenbeek, Out of equilibrium quantum dot dynamics.

We present the theoretical study of a weakly blockaded quantum dot (metallic island) out of equilibrium.

It is well-known that at equilibrium the Coulomb blockade in such systems reveals itself via non-perturbative solutions

(instantons) of the effective Ambegaokar-Eckern-Shoen -action (which treats Coulomb interaction exactly). On the other hand little is known about these solutions in the most realistic experimental case: out-of-equilibrium quantum dot. In recent experiments [1], the I-V curves were measured in the out-of-equilibrium case. Therefore, we address the problem of non-perturbtive solutions in this model using non-equilibrium Keldysh technique.

Ya.I. Rodionov, K.S. Tikhonov, I.S. Burmistrov

[1] O. Bitton, D. B. Gutman, R. Berkovits & A. Frydman , Nature Comm. 8, 402 (2017)