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Title: Oscillations of Bose-Einstein condensates in a one-dimensional optical superlattice

Abstract

Oscillations of atomic Bose-Einstein condensates in a 1D optical lattice with a two-point basis is investigated. In the low-frequency regime, four branches of modes are resolved, that correspond to the transverse in-phase and out-of-phase breathing modes, and the longitudinal acoustic and optical phonon modes of the condensates. Dispersions of these modes depend intimately on the values of two intersite Josephson tunneling strengths, J{sub 1} and J{sub 2}, and the on-site repulsion U between the atoms. Observation of these mode dispersions is thus a direct way to access them.

Authors:
;  [1]
  1. Department of Physics, National Taiwan Normal University, Taipei 11650, Taiwan (China)
Publication Date:
OSTI Identifier:
20786391
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevA.72.065601; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; BOSE-EINSTEIN CONDENSATION; ONE-DIMENSIONAL CALCULATIONS; OSCILLATIONS; PHONONS; SUPERLATTICES; TUNNEL EFFECT

Citation Formats

Huang, C.-C., and Wu, W.-C.. Oscillations of Bose-Einstein condensates in a one-dimensional optical superlattice. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Huang, C.-C., & Wu, W.-C.. Oscillations of Bose-Einstein condensates in a one-dimensional optical superlattice. United States. doi:10.1103/PHYSREVA.72.0.
Huang, C.-C., and Wu, W.-C.. Thu . "Oscillations of Bose-Einstein condensates in a one-dimensional optical superlattice". United States. doi:10.1103/PHYSREVA.72.0.
@article{osti_20786391,
title = {Oscillations of Bose-Einstein condensates in a one-dimensional optical superlattice},
author = {Huang, C.-C. and Wu, W.-C.},
abstractNote = {Oscillations of atomic Bose-Einstein condensates in a 1D optical lattice with a two-point basis is investigated. In the low-frequency regime, four branches of modes are resolved, that correspond to the transverse in-phase and out-of-phase breathing modes, and the longitudinal acoustic and optical phonon modes of the condensates. Dispersions of these modes depend intimately on the values of two intersite Josephson tunneling strengths, J{sub 1} and J{sub 2}, and the on-site repulsion U between the atoms. Observation of these mode dispersions is thus a direct way to access them.},
doi = {10.1103/PHYSREVA.72.0},
journal = {Physical Review. A},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}