Tkachenko waves in rapidly rotating Bose-Einstein condensates
L. O. Baksmaty, S. J. Woo, S. Choi, N. P. Bigelow
TL;DR
This paper presents a numerical mean-field study of Tkachenko waves in vortex lattices of rotating Bose-Einstein condensates, showing strong agreement with experiments and analytical predictions, and exploring deeper into the incompressible regime.
Contribution
It extends previous work by numerically analyzing Tkachenko waves beyond experimental conditions and comparing results with analytical models in the incompressible regime.
Findings
Excellent agreement with recent JILA experiments
Validation of analytical results in the incompressible regime
Discussion of bulk excitations observed experimentally
Abstract
We present a mean-field theory numerical study of Tkachenko waves of a vortex lattice in trapped atomic Bose-Einstein condenstates. Our results show remarkable qualitative and quantitative agreement with recent experiments at JILA. We extend our calculations beyond the conditions of the experiment, probing deeper into the incompressible regime where we find excellent agreement with analytical results. In addition, bulk excitations observed in the experiment are discussed.
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