Quantum Numbers for Excitations of Bose-Einstein Condensates in 1D Optical Lattices

Details Quantum Numbers for Excitations of Bose-Einstein Condensates in 1D Optical Lattices Quantum Numbers for Excitations of Bose-Einstein Condensates in 1D Optical Lattices

2004-07-09

arxiv.org/abs/cond-mat/0407225v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 9 figures

Scientific paper

10.1143/JPSJ.73.3083

The excitation spectrum and the band structure of a Bose-Einstein condensate in a periodic potential are investigated. Analyses within full 3D systems, finite 1D systems, and ideal periodic 1D systems are compared. We find two branches of excitations in the spectra of the finite 1D model. The band structures for the first and (part of) the second band are compared between a finite 1D and the fully periodic 1D systems, utilizing a new definition of a effective wavenumber and a phase-slip number. The upper and lower edges of the first gap coincide well between the two cases. The remaining difference is explained by the existence of the two branches due to the finite-size effect.

Affiliated with

Also associated with

No associations

Rating

Quantum Numbers for Excitations of Bose-Einstein Condensates in 1D Optical Lattices does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Quantum Numbers for Excitations of Bose-Einstein Condensates in 1D Optical Lattices, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Numbers for Excitations of Bose-Einstein Condensates in 1D Optical Lattices will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-725817