Title 



Some current issues concerning statics and dynamics of inhomogeneous superfluid gases
 
Author 



 
Abstract 



After a brief introduction to the static GrossPitaevskii (GP) differential equation for the ground state of a BoseEinstein condensed gas and an example of its use in describing a vortex array in a trapped condensate, a recent generalization is reviewed. By starting from the Bogoliubovde Gennes equations for superfluid fermions, an integral equation results. This is shown to contain the static GP equation as a limiting case, by means of a loworder gradient expansion of the order parameter. The timedependent GP approximation is then presented and illustrated by a numerical example concerning drop emission under gravity from a gaseous condensate in an optical lattice. Further selected topics of present interest relating more generally to the dynamics of trapped superfluid gases concern the effects of temperature on collective excitations in a Bose gas and the fingerprints that these excitations in a gas of paired fermions contain of the crossover from a BardeenCooperSchrieffer correlated assembly to a BoseEinstein condensate of composite bosons. Finally, some directions are pointed in which interaction of firstprinciples theory with experiment should prove fruitful.   
Language 



English
 
Source (journal) 



Physics and chemistry of liquids.  London  
Publication 



London : 2004
 
ISSN 



00319104
 
Volume/pages 



42:5(2004), p. 433445
 
ISI 



000224560300001
 
Full text (Publishers DOI) 


  
