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Two-dimensional Bose gas under extreme rotation

S. Sinha·G. V. Shlyapnikov
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Abstract

We show that a Bose-condensed gas under extreme rotation in a 2D anisotropic trap, forms a novel elongated quantum fluid which has a roton-maxon excitation spectrum. For a sufficiently large interaction strength, the roton energy reaches zero and the system undergoes a second order quantum transition to the state with a periodic structure - rows of vortices. The number of rows increases with the interaction, and the vortices eventually form a triangular Abrikosov lattice.

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BibTeXRIS

S. Sinha, G. V. Shlyapnikov. 2005-01-03. Two-dimensional Bose gas under extreme rotation. https://doi.org/10.1103/physrevlett.94.150401

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