Mean field effects in a trapped classical gas

Details Mean field effects in a trapped classical gas Mean field effects in a trapped classical gas

2001-11-29

arxiv.org/abs/cond-mat/0111562v1

Physical Review A Vol 66, 033613 (2002)

Physics

Condensed Matter

Statistical Mechanics

4 pages, no figure submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.66.033613

In this article, we investigate mean field effects for a bosonic gas harmonically trapped above the transition temperature in the collisionless regime. We point out that those effects can play also a role in low dimensional system. Our treatment relies on the Boltzmann equation with the inclusion of the mean field term. The equilibrium state is first discussed. The dispersion relation for collective oscillations (monopole, quadrupole, dipole modes) is then derived. In particular, our treatment gives the frequency of the monopole mode in an isotropic and harmonic trap in the presence of mean field in all dimensions.

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