A nonextensive approach to Bose-Einstein condensation of trapped interacting boson gas

Details A nonextensive approach to Bose-Einstein condensation of trapped interacting boson gas A nonextensive approach to Bose-Einstein condensation of trapped interacting boson gas

2008-02-09

arxiv.org/abs/0802.1248v1

Journal of Low Temperature Physics 150 (2008) 605-611

Physics

Condensed Matter

Statistical Mechanics

Scientific paper

10.1007/s10909-007-9596-2

In the Bose-Einstein condensation of interacting atoms or molecules such as 87Rb, 23Na and 7Li, the theoretical understanding of the transition temperature is not always obvious due to the interactions or zero point energy which cannot be exactly taken into account. The S-wave collision model fails sometimes to account for the condensation temperatures. In this work, we look at the problem within the nonextensive statistics which is considered as a possible theory describing interacting systems. The generalized energy Uq and the particle number Nq of boson gas are given in terms of the nonextensive parameter q. q>1 (q<1) implies repulsive (attractive) interaction with respect to the perfect gas. The generalized condensation temperature Tcq is derived versus Tc given by the perfect gas theory. Thanks to the observed condensation temperatures, we find q ~ 0.1 for 87Rb atomic gas, q ~ 0.95 for 7Li and q ~ 0.62 for 23Na. It is concluded that the effective interactions are essentially attractive for the three considered atoms, which is consistent with the observed temperatures higher than those predicted by the conventional theory.

Affiliated with

Also associated with

No associations

Rating

A nonextensive approach to Bose-Einstein condensation of trapped interacting boson gas 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 A nonextensive approach to Bose-Einstein condensation of trapped interacting boson gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A nonextensive approach to Bose-Einstein condensation of trapped interacting boson gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-402725