TY - JOUR
T1 - Center motions of nonoverlapping condensates coupled by long-range dipolar interaction in bilayer and multilayer stacks
AU - Huang, Chao Chun
AU - Wu, Wen Chin
PY - 2010
Y1 - 2010
N2 - We investigate the effect of anisotropic and long-range dipole-dipole interaction (DDI) on the center motions of nonoverlapping Bose-Einstein condensates in bilayer and multilayer stacks. In the bilayer, it is shown analytically that while DDI plays no role in the in-phase modes of center motions of condensates, out-of-phase mode frequency (ω o) depends crucially on the strength of DDI (a d). At the small-a d limit, ω 2 o(a d) - ω 2 o(0) ∝ a d. In the multilayer stack, transverse modes associated with center motions of coupled condensates are found to be optical-phonon-like. At the long-wavelength limit, phonon velocity is proportional to √a d.
AB - We investigate the effect of anisotropic and long-range dipole-dipole interaction (DDI) on the center motions of nonoverlapping Bose-Einstein condensates in bilayer and multilayer stacks. In the bilayer, it is shown analytically that while DDI plays no role in the in-phase modes of center motions of condensates, out-of-phase mode frequency (ω o) depends crucially on the strength of DDI (a d). At the small-a d limit, ω 2 o(a d) - ω 2 o(0) ∝ a d. In the multilayer stack, transverse modes associated with center motions of coupled condensates are found to be optical-phonon-like. At the long-wavelength limit, phonon velocity is proportional to √a d.
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U2 - 10.1103/PhysRevA.82.053612
DO - 10.1103/PhysRevA.82.053612
M3 - Article
AN - SCOPUS:78649549511
SN - 1050-2947
VL - 82
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 5
M1 - 053612
ER -