Project B5:
Non-equilibrium dynamics of trapped gases in controlled geometries (2005-2009)
Summary
Quantum gases respond sensitively to the dimensionality of the confining geometry. Thus, it is intuitively clear that the importance of quantum fluctuations grows with the controlled reduction of the available phase-space volume. In the present proposal, we approach this topic by studying the real-time response of a trapped bosonic or fermionic gas, as it evolves though the dimensional crossover. By controlling the external confinement from 3d to quasi 2d to quasi 1d, one can tailor dynamically new cooperative quantum states and observe the subsequent relaxation of the quantum correlations towards the thermodynamic equilibrium.
Project leaders
Prof. Dr. Wolfgang P. Schleich, Institut für Quantenphysik, Universität Ulm
Prof. Dr. Reinhold Walser, Institut für Angewandte Physik, TU Darmstadt
Refs & Publications
M. Eckart, R. Walser, W.P. Schleich, S. Zöllner, and P. Schmelcher"The granularity of weakly occupied bosonic fields beyond the local density approximation"
New J. Physics 11, 023010 (2009)
M. Eckart, R. Walser, and W. Schleich
"Exploring the growth of correlations in a quasi one-dimensional trapped Bose gas"
New J. Phys. 10, 045024 (2008); arXiv: 0712.0311 (2007)
R. Walser, E. Goldobin, O. Crasser, D. Kölle, R. Kleiner, and W. P. Schleich
"Semifluxons in Superconductivity and Cold Atomic Gases"
New. J. Phys. 10, 045020 (2008); doi: 10.1088/1367-2630/10/4/045020
R. Walser
"Kontrollierte Herstellung von Quantenmaterie angestrebt"
Uni-Ulm Intern 278, 24-25 (2006)