Two-dimensional Bose gas under extreme rotation
Statistical Mechanics
2009-11-10 v2 Mesoscale and Nanoscale Physics
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.
Cite
@article{arxiv.cond-mat/0412139,
title = {Two-dimensional Bose gas under extreme rotation},
author = {S. Sinha and G. V. Shlyapnikov},
journal= {arXiv preprint arXiv:cond-mat/0412139},
year = {2009}
}
Comments
typos corrected, ref. added, minor changes in the paper