%0 Journal Article
%T Vortices in a rotating Bose-Einstein condensate under extreme elongation in a harmonic plus quartic trap
%A C. C. Huang
%A C. H. Liu
%A W. C. Wu
%J Physics
%D 2012
%I arXiv
%R 10.1103/PhysRevA.81.043605
%X The behaviors of a rapid rotating Bose-Einstein condensate under extreme elongation in a 2D anisotropic harmonic plus quartic trap are investigated. Due to the quartic trap, the system remains stable at high rotating velocity, $\Omega\geq \omega_\perp$ ($\omega_\perp$ is the radial harmonic trap frequency), and vortex lattices form even in the absence of the repulsive s-wave interaction ($g$). When $g$ is present, the interplay between $g$ and the quartic trap potential can lead to rich vortex lattice transition states as a function of $\Omega$, to which vortex lattices vanish eventually at some higher $\Omega$.
%U http://arxiv.org/abs/1206.2198v1