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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