Dresden 2011 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 11: Poster Session: Matter at Low Temperature
TT 11.18: Poster
Monday, March 14, 2011, 14:00–18:00, P4
Non-Equilibrium Dynamics of two coupled 1D condensates of interacting atoms — •Clemens Neuenhahn1,3, Florian Marquardt1,2, and Anatoli Polkovnikov3 — 1Institut für Theoretische Physik, Universität Erlangen-Nürnberg, Staudtstr. 7, D-91058 Erlangen, Germany — 2Max Planck Institut for the Science of Light, Günter-Scharoswky- Strasse 1/Bau 24,D-91058 Erlangen, Germany — 3Boston University, 590 Commonwealth Avenue Boston, MA 02215, USA
Motivated by recent experiments, we investigate the non-equilibrium dynamics of two interacting one-dimensional condensates following a quench of the tunnel-coupling to finite values. These coupled condensates provide a realization of the quantum sine-Gordon model, whose non-linear time-evolution after turning-on the coupling is studied using the semiclassical truncated Wigner approximation. We analyze the amplification of initial quantum fluctuations of the relative phase and the emergence of localized phase structures.