Low lying twisting and acoustic modes of a rotating Bose-Einstein condensate
arXiv:cond-mat/0511547 · doi:10.1103/PhysRevA.73.041604
Abstract
We present a calculation of the low lying spectrum of a rotating Bose-Einstein condensate. We show that in a cylindrical geometry, there exist two linear branches, one associated to usual acoustic excitation, the other corresponding to a twisting mode of the vortex lattice. Using a hydrodynamical approach we derive the elasticity coefficient of the vortex lattice and calculate the spectrum of condensate in a three dimensionnal harmonic trap with cylindrical symmetry.
4 pages, 2 figures
References in corpus (12)
- Vortices and Superfluidity in a Strongly Interacting Fermi Gas
- Observation of Tkachenko Oscillations in Rapidly Rotating Bose-Einstein Condensates
- Tkachenko modes of vortex lattices in rapidly rotating Bose-Einstein condensates
- Collective Oscillations of Vortex Lattices in Rotating Bose-Einstein Condensates
- Tkachenko waves in rapidly rotating Bose-Einstein condensates
- Experimental observation of the 'Tilting Mode' of an array of vortices in a dilute Bose-Einstein Condensate
- Quantum fluctuations of a vortex in an optical lattice
- Tkachenko oscillations and the compressibility of a rotating Bose gas
- Vortex lattice stability and phase coherence in three-dimensional rapidly rotating Bose condensates
- Kelvin Modes of a fast rotating Bose-Einstein Condensate
- Excitation spectrum of vortex lattices in rotating Bose-Einstein condensates
- The non-classical scissors mode of a vortex lattice in a Bose-Einstein condensate
Cited by in corpus (7)
- Many-Body Physics with Ultracold Gases
- Kelvin-Tkachenko waves of few-vortex arrays in trapped Bose-Einstein condensates
- Enhanced many-body effects in the excitation spectrum of a weakly-interacting rotating Bose-Einstein condensate
- Vortex-lattice melting in a one-dimensional optical lattice
- Theory of vortex-lattice melting in a one-dimensional optical lattice
- Spontaneous symmetry breaking in rotating condensates of ultracold atoms
- Many-body effects in the excitations and dynamics of trapped Bose-Einstein condensates