Probing the classical field approximation - thermodynamics and decaying vortices

Details Probing the classical field approximation - thermodynamics and decaying vortices Probing the classical field approximation - thermodynamics and decaying vortices

2002-09-27

arxiv.org/abs/cond-mat/0209637v2

J. Opt. B 5, S96 (2003)

Physics

Condensed Matter

7 pages, 8 eps figures, submitted to J. Optics B for the proceedings of the "Atom Optics and Interferometry" Lunteren 2002 wor

Scientific paper

10.1088/1464-4266/5/2/364

We review our version of the classical field approximation to the dynamics of a finite temperature Bose gas. In the case of a periodic box potential, we investigate the role of the high momentum cut-off, essential in the method. In particular, we show that the cut-off going to infinity limit decribes the particle number going to infinity with the scattering length going to zero. In this weak interaction limit, the relative population of the condensate tends to unity. We also show that the cross-over energy, at which the probability distribution of the condensate occupation changes its character, grows with a growing scattering length. In the more physical case of the condensate in the harmonic trap we investigate the dissipative dynamics of a vortex. We compare the decay time and the velocities of the vortex with the available analytic estimates.

Affiliated with

Also associated with

No associations

Rating

Probing the classical field approximation - thermodynamics and decaying vortices does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Probing the classical field approximation - thermodynamics and decaying vortices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing the classical field approximation - thermodynamics and decaying vortices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-433614