Vortices in a rotating Bose-Einstein condensate under extreme elongation in a harmonic plus quartic trap

Abstract

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, $\Omega \ge {\omega }_{\perp }$ (${\omega }_{\perp }$ 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 $\Omega$.

arXiv comment5 pages, 5 figures

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Cited by in corpus (1)

• Equilibrium vortex formation in ultrarapidly rotating two-component Bose-Einstein condensates