Vortex liquids and vortex quantum Hall states in trapped rotating Bose gases

Vortex liquids and vortex quantum Hall states in trapped rotating Bose gases

We discuss the feasibility of quantum Hall states of vortices in trapped low-density two-dimensional Bose gases with large particle interactions. For interaction strengths larger than a critical dimensionless 2D coupling constant gc ≈ 0.6, upon increasing the rotation frequency, the system is shown to spatially separate into vortex lattice and melted vortex lattice (vortex liquid) phases. At a ...

Quantum Hall phases and plasma analogy in rotating trapped Bose gases

N. Rougerie , S. Serfaty , J. Yngvason 4,5 1 Université Grenoble 1 and CNRS, LPMMC, UMR 5493, BP 166, 38042 Grenoble, France. 2 Universtité Paris 6, Laboratoire Jacques-Louis Lions, UMR 7598, Paris, F-75005 France. 3 Courant Institute, New York University, 251 Mercer st, NY 10012, USA. 4 Fakultät für Physik, Universität Wien, Boltzmanngasse 5, 1090 Vienna, Austria. 5 Erwin Schrödinger Institute...

Vortex motion in trapped Bose–Einstein condensate

We have studied the motion of a vortex-antivortex pair together with a single vortex in trapped Bose-Einstein condensate (BEC) by numerically solving the twodimensional Gross-Pitaevskii equation, and found that the path of the vortices depends on the initial separation distance and dissipation. This motion was periodic and it was found that sound waves appear due to the cyclical movement, whose...

Vortex pairing in two-dimensional Bose gases

Recent experiments on ultracold Bose gases in two dimensions have provided evidence for the existence of the Berezinskii-Kosterlitz-Thouless (BKT) phase via analysis of the interference between two independent systems. In this work we study the two-dimensional quantum degenerate Bose gas at finite temperature using the projected Gross-Pitaevskii equation classical field method. Although this de...

Vortex Lattices in Rotating Bose-Einstein Condensates