Zero-energy states in rotating trapped Bose-Einstein condensates
Quantum Gases
2013-06-25 v2 Quantum Physics
Abstract
We have calculated low-lying quasiparticle excitation spectra of rotating three-dimensional Bose-Einstein condensates. As opposed to the prediction of hydrodynamic continuum theories, we find a minimum in the Tkachenko mode spectrum at intermediate rotation frequencies of the harmonic trap. Such a minimum can harbour a Tkachenko quasiparticle with zero excitation energy. We discuss the experimental signatures of such a zero mode.
Cite
@article{arxiv.1207.5892,
title = {Zero-energy states in rotating trapped Bose-Einstein condensates},
author = {Tapio Simula},
journal= {arXiv preprint arXiv:1207.5892},
year = {2013}
}
Comments
14 pages, 6 figures