Low-lying twisting and acoustic modes of a rotating Bose-Einstein condensate

Journal Article · Sat Apr 15 00:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.0· OSTI ID:20787052

Chevy, F ^[1]

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1. Laboratoire Kastler-Brossel, Unite de Recherche de l'Ecole normale superieure et de l'Universite Pierre et Marie Curie, associee au CNRS, ENS, 24 rue Lhomond, 75005 Paris (France)

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 with usual acoustic excitations, 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-dimensional harmonic trap with cylindrical symmetry.

• OSTI ID: 20787052
• Journal Information: Physical Review. A, Vol. 73, Issue 4; Other Information: DOI: 10.1103/PhysRevA.73.041604; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
CYLINDRICAL CONFIGURATION
ELASTICITY
ENERGY SPECTRA
EXCITATION
GEOMETRY
HYDRODYNAMICS
SYMMETRY
THREE-DIMENSIONAL CALCULATIONS
TRAPS
VORTICES