Abstract
We derive the effective Gross-Pitaevskii equation for a cigar-shaped dipolar Bose-Einstein condensate in one-dimensional lattices and investigate the band structures numerically. Due to the anisotropic and the long-ranged dipole-dipole interaction in addition to the known contact interaction, we elucidate the possibility of modifying the band structures by changing the alignment of the dipoles with the axial direction. With the considerations of the transverse parts and the practical physical parameters of a cigar-shaped trap, we show the possibility to stabilize an attractive condensate simply by adjusting the orientation angle of dipoles. Some interesting Bloch waves at several particle current densities are identified for possible experimental observations.
| Original language | English |
|---|---|
| Article number | 023629 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 78 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2008 Aug 25 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
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Band structures of a dipolar Bose-Einstein condensate in one-dimensional lattices. / Lin, Yuanyao; Lee, Ray Kuang; Kao, Yee-Mou; Jiang, Tsin Fu.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 78, No. 2, 023629, 25.08.2008.Research output: Contribution to journal › Article
TY - JOUR
T1 - Band structures of a dipolar Bose-Einstein condensate in one-dimensional lattices
AU - Lin, Yuanyao
AU - Lee, Ray Kuang
AU - Kao, Yee-Mou
AU - Jiang, Tsin Fu
PY - 2008/8/25
Y1 - 2008/8/25
N2 - We derive the effective Gross-Pitaevskii equation for a cigar-shaped dipolar Bose-Einstein condensate in one-dimensional lattices and investigate the band structures numerically. Due to the anisotropic and the long-ranged dipole-dipole interaction in addition to the known contact interaction, we elucidate the possibility of modifying the band structures by changing the alignment of the dipoles with the axial direction. With the considerations of the transverse parts and the practical physical parameters of a cigar-shaped trap, we show the possibility to stabilize an attractive condensate simply by adjusting the orientation angle of dipoles. Some interesting Bloch waves at several particle current densities are identified for possible experimental observations.
AB - We derive the effective Gross-Pitaevskii equation for a cigar-shaped dipolar Bose-Einstein condensate in one-dimensional lattices and investigate the band structures numerically. Due to the anisotropic and the long-ranged dipole-dipole interaction in addition to the known contact interaction, we elucidate the possibility of modifying the band structures by changing the alignment of the dipoles with the axial direction. With the considerations of the transverse parts and the practical physical parameters of a cigar-shaped trap, we show the possibility to stabilize an attractive condensate simply by adjusting the orientation angle of dipoles. Some interesting Bloch waves at several particle current densities are identified for possible experimental observations.
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U2 - 10.1103/PhysRevA.78.023629
DO - 10.1103/PhysRevA.78.023629
M3 - Article
VL - 78
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 2
M1 - 023629
ER -