Beats and expansion of two-component Bose-Einstein condensates in the Thomas-Fermi limit

A unique feature of multi-component Bose-Einstein condensates (BECs) is the possibility of beating frequencies in collective oscillations. We analytically determine this beating frequency for the two-component BEC in one-dimension. We also show that the Thomas-Fermi approximation, where the quantum...

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Bibliographic Details
Published in:Journal of physics. B, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2014-11, Vol.47 (21), p.215007-8
Main Author: Quach, James Q
Format: Article
Language:English
Subjects:
Approximation
Atomic and molecular physics
Bose-Einstein condensates
Calculations and mathematical techniques in atomic and molecular physics (excluding electron correlation calculations)
Classical and quantum physics: mechanics and fields
Condensates
Electronic structure of atoms, molecules and their ions: theory
Exact sciences and technology
Harmonics
Mathematical analysis
Matter waves
Oscillations
Physics
Statistical model calculations (including thomas-fermi and thomas-fermi-dirac models)
Thomas-Fermi
two-component
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Summary:A unique feature of multi-component Bose-Einstein condensates (BECs) is the possibility of beating frequencies in collective oscillations. We analytically determine this beating frequency for the two-component BEC in one-dimension. We also show that the Thomas-Fermi approximation, where the quantum pressure is neglected, describes well the expansion of the two-component condensate released from an harmonic trap.
ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/47/21/215007