Probing quantum statistical mechanics with Bose gases: Nontrivial order parameter topology from a BoseEinstein quench
Abstract
This is a less technical presentation of the ideas in quantph/9804035 [Phys Rev Lett 83 (1999), 17071710]. A second order phase transition induced by a rapid quench can lock out topological defects with densities far exceeding their equilibrium expectation values. This phenomenon is a generic prediction of nonequilibrium statistical mechanics, and can appear in a wide range of physical systems. We discuss it qualitatively in the context of trapped dilute BoseEinstein condensates, outline a simple quantitative theory based on the timedependent GinzburgLandau equation, and briefly compare the results of quantum kinetic theory.
 Publication:

arXiv eprints
 Pub Date:
 January 2000
 arXiv:
 arXiv:condmat/0001146
 Bibcode:
 2000cond.mat..1146A
 Keywords:

 Condensed Matter  Statistical Mechanics;
 Condensed Matter  Soft Condensed Matter
 EPrint:
 6 pages, 3 figures, to appear in the proceedings of ISQM Tokyo 98