This course introduces modern field-theoretical approaches to non-equilibrium systems. Through practical examples from quantum gases/optics, we construct the Keldysh formalism and explore the connecti
A fundamental subject that students workiing with scattering amplitudes and boot-straps and effective theories must know, and in order to constrain and improve theories.
The goal of this class is to teach how to look at two-dimensional field theories, how to analyse them, how to put structures on them. In the end, the student should have a good picture into what we un
