Spinor Bose Condensates in Optical Traps
Condensed Matter
2009-10-31 v1
Abstract
In an optical trap, the ground state of spin-1 Bosons such as Na, K, and Rb can be either a ferromagnetic or a "polar" state, depending on the scattering lengths in different angular momentum channel. The collective modes of these states have very different spin character and spatial distributions. While ordinary vortices are stable in the polar state, only those with unit circulation are stable in the ferromagnetic state. The ferromagnetic state also has coreless (or Skyrmion) vortices like those of superfluid He-A. Current estimates of scattering lengths suggest that the ground states of Na and Rb condensate are a polar state and a ferromagnetic state respectively.
Keywords
Cite
@article{arxiv.cond-mat/9803231,
title = {Spinor Bose Condensates in Optical Traps},
author = {Tin-Lun Ho},
journal= {arXiv preprint arXiv:cond-mat/9803231},
year = {2009}
}
Comments
11 pages, no figures. email : [email protected]