Band structures of a dipolar Bose-Einstein condensate in one-dimensional lattices

Yuanyao Lin, Ray Kuang Lee, Yee Mou Kao, Tsin Fu Jiang

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19 Citations (Scopus)

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 languageEnglish
Article number023629
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume78
Issue number2
DOIs
Publication statusPublished - 2008 Aug 25

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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