Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8204824 | Physics Letters A | 2015 | 4 Pages |
Abstract
Spin-orbit-coupled Bose-Einstein condensates (BECs) provide a powerful platform for studies on physical problems in various fields. Here we study the energy spectrum of a tunable spin-orbit-coupled BEC in a double-well potential with adjustable Raman laser intensity. We find in the single-particle spectrum there is a highly degenerate flat band in the ground state of the BEC, which remains stable against changes of the Raman strength. Many-body interactions between atoms remove this high degeneracy. Analytical results for particular cases are obtained by using the perturbation theory, which are in good agreement with the numerical results.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Wen-Yuan Wang, Hui Cao, Jie Liu, Li-Bin Fu,