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. 2004 Apr 23;92(16):160405.
doi: 10.1103/PhysRevLett.92.160405. Epub 2004 Apr 20.

Tkachenko waves in rapidly rotating Bose-Einstein condensates

L O Baksmaty  1 , S J Woo, S Choi, N P Bigelow
Affiliations

Tkachenko waves in rapidly rotating Bose-Einstein condensates

L O Baksmaty et al. Phys Rev Lett. .

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 the Joint Institute for Laboratory Astrophysics. 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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