Tkachenko oscillations and the compressibility of a rotating Bose-Einstein condensate

Physical Review Letters

Volumn 92, Issue 22, 2004, Pages

  Cozzini, M ^a   Pitaevskii, L P ^a,b   Stringari, S ^a  

^a UNIVERSITY OF TRENTO   (Italy)

^b KAPITZA INSTITUTE FOR PHYSICAL PROBLEMS   (Russian Federation)

Author keywords

[No Author keywords available]

Indexed keywords

CRYSTAL STRUCTURE; FUNCTIONS; HAMILTONIANS; HYDRODYNAMICS; MATHEMATICAL MODELS; PERTURBATION TECHNIQUES; VECTORS; VELOCITY MEASUREMENT;

ENERGY SPECTURM; FLUID PARTICLES; THOMAS-FERMI REGIME; WAVE VECTORS;

OSCILLATIONS;

EID: 3042831737     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.92.220401     Document Type: Article

References (28)

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19. 2).
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24. 2)/2 - Ω · (r ∧ mv)].
25. -3/10, where a is the scattering length and a⊥ = √ℏ/mω ⊥.
26. Notice that Eq. (8) can also be obtained from Eqs. (9) and (10) imposing the condition Δ(gδn/m) + 2Ω ∧ δ v = 0, which characterizes the class of zero energy hydrodynamic solutions related to Tkachenko modes [16]. This condition also rules out any dependence of δn and δ v on z, consistently with our choice of the excitation operator F.
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28. 2 = 29.7 extracted from the 2D calculation of Ref. [6].