Spin dynamics of a trapped spin-1 Bose Gas above the Bose-Einstein transition temperature
Other Condensed Matter
2009-11-13 v2
Abstract
We study collective spin oscillations in a spin-1 Bose gas above the Bose-Einstein transition temperature. Starting from the Heisenberg equation of motion, we derive a kinetic equation describing the dynamics of a thermal gas with the spin-1 degree of freedom. Applying the moment method to the kinetic equation, we study spin-wave collective modes with dipole symmetry. The dipole modes in the spin-1 system are found to be classified into the three type of modes. The frequency and damping rate are obtained as functions of the peak density. The damping rate is characterized by three relaxation times associated with collisions.
Cite
@article{arxiv.0710.4419,
title = {Spin dynamics of a trapped spin-1 Bose Gas above the Bose-Einstein transition temperature},
author = {Yuki Endo and Tetsuro Nikuni},
journal= {arXiv preprint arXiv:0710.4419},
year = {2009}
}
Comments
19 pages, 5 figure