HIC for FAIR logo Nuclear Physics Colloquium

Location: ITP, Science Campus Riedberg, Max-von-Laue-Str. 1, room 02.116 Time: Thursday, May 02, 2013, 4:30-5:30 pm (plus 10min for discussion)
Contact: hees@fias.uni-frankfurt.de

Universal dynamics far from equilibrium: topology, and turbulence in Bose gases

Thomas Gasenzer (University Heidelberg)

Many-body systems far away from thermal equilibrium can show a much wider range of characteristics than equilibrium systems. Among the wealth of possible non-equilibrium many-body configurations most interesting candidates are those which show universal behavior. A selection of such phenomena in ultracold Bose gases, characterized by specific power-laws in space and time, will be presented. These are closely related to the presence and turbulent dynamics of (quasi-)topological defects in the Bose field, which generically appear far from equilibrium. Examples include interaction quenches in one and two spatial dimensions, rapid evaporative cooling, as well as gauge field-matter systems. Our results open a path to explore a new class of universal far-from-equilibrium dynamics well accessible in ultracold gas experiments. These phenomena are of interest beyond the realm of cold gases, via solid-state systems to high-energy heavy-ion collisions and cosmology.

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