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DY: Fachverband Dynamik und Statistische Physik

DY 36: Collective Quantum Dynamics: From Fundamentals to New Phenomena (Focus session joint DY/TT)

DY 36.2: Hauptvortrag

Mittwoch, 22. März 2017, 15:30–16:00, HSZ 03

Exploring Many-Body Localization in Two Dimensions — •Christian Gross — Max-Planck-Institut für Quantenoptik, Garching

The question of thermalization in closed quantum systems is currently a topic of intense research and ultracold atoms are an almost ideal experimental system for its study. In this context it is particularly interesting to study systems that do not thermalize. Many-body localized systems form a generic class of such systems, which is largely unexplored in higher dimensions and at high energy densities. Here we report on recent experiments with single site resolved ultracold lattice bosons in two dimensions subject to random disorder. Our data indicates a transition from thermalizing behavior at low disorder to localization at higher disorder and a diverging length scale at the transition. Finally we discuss ongoing experimental effort and possibilities to characterize the MBL phase close to the transition point.