Tkachenko oscillations and the compressibility of a rotating Bose gas

Details Tkachenko oscillations and the compressibility of a rotating Bose gas Tkachenko oscillations and the compressibility of a rotating Bose gas

2004-01-26

arxiv.org/abs/cond-mat/0401516v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 2 figures

Scientific paper

10.1103/PhysRevLett.92.220401

The elastic oscillations of the vortex lattice of a cold Bose gas (Tkachenko modes) are shown to play a crucial role in the saturation of the compressibility sum rule, as a consequence of the hybridization with the longitudinal degrees of freedom. The presence of the vortex lattice is responsible for a $q^2$ behavior of the static structure factor at small wavevectors $q$, which implies the absence of long range order in 2D configurations at zero temperature. Sum rules are used to calculate the Tkachenko frequency in the presence of harmonic trapping. Results are derived in the Thomas-Fermi regime and compared with experiments as well as with previous theoretical estimates.

Affiliated with

Also associated with

No associations

Rating

Tkachenko oscillations and the compressibility of a rotating Bose gas does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Tkachenko oscillations and the compressibility of a rotating Bose gas, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tkachenko oscillations and the compressibility of a rotating Bose gas will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-143123