Momentum distribution of confined bosons: Temperature dependence
Abstract
The momentum distribution function of a parabolically confined gas of bosons with harmonic interparticle interactions is derived. In the Bose-Einstein condensation region, this momentum distribution substantially deviates from a Maxwell-Boltzmann distribution. It is argued that the determination of the temperature of the boson gas from the Bose-Einstein momentum distribution function is more appropriate than the currently used fitting to the high-momentum tail of the Maxwell-Boltzmann distribution.
- Publication:
-
Physical Review A
- Pub Date:
- October 1998
- DOI:
- 10.1103/PhysRevA.58.3180
- arXiv:
- arXiv:quant-ph/9807036
- Bibcode:
- 1998PhRvA..58.3180T
- Keywords:
-
- 03.75.Fi;
- 32.80.Pj;
- 05.30.Jp;
- Optical cooling of atoms;
- trapping;
- Boson systems;
- Quantum Physics
- E-Print:
- 5 REVTEX pages + 2 postscript figures. Accepted in Phys. Rev. A