Phase separation in a spin-orbit coupled Bose-Einstein condensate
Quantum Gases
2014-11-06 v2
Abstract
We study a spin-orbit (SO) coupled hyperfine spin-1 Bose-Einstein condensate (BEC) in a quasi-one-dimensional trap. For a SO-coupled BEC in a one-dimensional box, we show that in the absence of the Rabi term, any non-zero value of SO coupling will result in a phase separation among the components for a ferromagnetic BEC, like Rb. On the other hand, SO coupling favors miscibility in a polar BEC, like Na. In the presence of a harmonic trap, which favors miscibility, a ferromagnetic BEC phase separates, provided the SO-coupling strength and number of atoms are greater than some critical value. The Rabi term favors miscibility irrespective of the nature of the spin interaction: ferromagnetic or polar.
Cite
@article{arxiv.1409.6211,
title = {Phase separation in a spin-orbit coupled Bose-Einstein condensate},
author = {Sandeep Gautam and S. K. Adhikari},
journal= {arXiv preprint arXiv:1409.6211},
year = {2014}
}