Michael Vogl, UT-Austin

"Out-of equilibrium many-body systems, the high frequency limit and applications"

Abstract: In recent years experimentalists managed to prepare previously thought to be hard to achieve out of equilibrium phases of matter. This has fueled a strong effort among theorists to develop techniques to treat such systems in as simple a manner as possible - preferably analytical. The most commonly chosen route is to map the time dependent problem onto an effective time-independent problem. The reason this is so appealing is because for the equilibrium case there already is a wealth of results and many known analytical techniques. This talk aims to give an overview over some of the more common theoretical tools. We particularly focus on systems that are driven with high frequency. We give some examples on what predictions can be made - such as phase transitions. We then slightly shift our focus and show how one can analytically include non-perturbative corrections into one of these schemes.