Published August 28, 2006 | Version v1
Journal article Metadata-only

Collective oscillations of a quasi-one-dimensional Bose condensate under damping

Creators

  • 1. Dipartamento di Fisica 'E.R. Caianiello', Universita di Salerno, I-84081 Baronissi (Saudi Arabia) (Italy) and Physical-Technical Institute of the Academy of Sciences, G. Mavlyanov 2-b, Tashkent 700 084 (Uzbekistan)
  • 2. Physical-Technical Institute of the Academy of Sciences, G. Mavlyanov 2-b, Tashkent 700 084 (Uzbekistan)
  • 3. Institute of Electronics of the Academy of Sciences, F. Khodjaev 33, Tashkent 700 125 (Uzbekistan)

Description

Affect of the damping on collective oscillations of a quasi-one-dimensional trapped repulsive Bose gas has been studied. Based on the phenomenological damping approach [L.P. Pitaevskii, Zh. Eksp. Teor. Fiz. 35 (1958) 408, Sov. Phys. JETP 35 (1958) 282] developed by Pitaevskii variational equations for the parameters of the condensate wave function have been derived. Analytical expressions for the condensate parameters in the steady-state have been obtained. Combined effect of the resonant periodical variation of the trap strength and the damping has been shown to change drastically asymptotical behavior of the driven norm oscillations. Bistability in nonlinear oscillations of the condensate under periodic variations of the trap potential is predicted

Additional details

Identifiers

DOI
10.1016/j.physleta.2006.04.019;
arXiv
arXiv:cond-mat/0508262v1;
PII
S0375-9601(06)00589-5;

Publishing Information

Journal Title
Physics Letters. A
Journal Volume
357
Journal Issue
1
Journal Page Range
p. 48-53
ISSN
0375-9601
CODEN
PYLAAG

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
38067063
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
BOSE-EINSTEIN CONDENSATION; BOSE-EINSTEIN GAS; EQUATIONS; NONLINEAR PROBLEMS; ONE-DIMENSIONAL CALCULATIONS; OSCILLATIONS; PERIODICITY; POTENTIALS; STEADY-STATE CONDITIONS; TRAPPING; VARIATIONAL METHODS; WAVE FUNCTIONS
Descriptors DEC
CALCULATION METHODS; FUNCTIONS; VARIATIONS

Optional Information

Copyright
Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.