Master Defense

Nikolaos Parthenios

Transient dynamics of the resonant level,

A study in non-equilibrium with the Keldysh formalism

In the last decade, technological advancements in experimental techniques have sparked substantial research efforts to explore the dynamics many-body quantum systems. Non-equilibrium systems in particular, can exhibit non-trivial behavior and novel phenomena. We present a numerical method for the solution of the Dyson equation in time domain, based on the non-equilibrium path integral of the Keldysh formalism. Using the resonant level model as a testing ground for the numerical method, we study the emergent transient phenomena and the steady state properties of the system, in both the non-interacting regime, as well as in a mean field approximation,highlighting its advantages and versatility.

Zoom link:  https://ucph-ku.zoom.us/j/67425780421