Kinetic Theory of a Spin-1/2 Bose-Condensed Gas

Details Kinetic Theory of a Spin-1/2 Bose-Condensed Gas Kinetic Theory of a Spin-1/2 Bose-Condensed Gas

2003-04-04

arxiv.org/abs/cond-mat/0304095v3

J. Low Temp. Phys. 133, 323 (2003)

Physics

Condensed Matter

Statistical Mechanics

34 pages, 1 figure, added an erratum for Eq.(76)

Scientific paper

We derive a kinetic theory for a spin-1/2 Bose-condensed gas of two-level atoms at finite temperatures. The condensate dynamics is described by a generalized Gross-Pitaevskii equation for the two-component spinor order parameter, which includes the interaction with the uncondensed fraction. The noncondensate atoms are described by a quantum kinetic equation, which is a generalization of the spin kinetic equation for spin-polarized quantum gases to include couplings to the condensate degree of freedom. The kinetic equation is used to derive hydrodynamic equations for the noncondensate spin density. The condensate and noncondensate spins are coupled directly through the exchange mean field. Collisions between the condensate and noncondensate atoms give rise to an additional contribution to the spin diffusion relaxation rate. In addition, they give rise to mutual relaxation of the condensate and noncondensate due to lack of local equilibrium between the two components.

Affiliated with

Also associated with

No associations

Rating

Kinetic Theory of a Spin-1/2 Bose-Condensed 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 Kinetic Theory of a Spin-1/2 Bose-Condensed Gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kinetic Theory of a Spin-1/2 Bose-Condensed Gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-385084