2012/11/30 by Yong Xu, Yongping Zhang, Biao Wu
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Strong Light-Matter Interactions #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.87.013614
published as Physical Review A 87, 013614 (2013) · 6 pages, 5 figures
openalex publication_date 2013/01/16 · arxiv created 2013/01/24 · arxiv updated 2013/01/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study bright solitons in a Bose-Einstein condensate with a spin-orbit coupling that has been realized experimentally. Both stationary bright solitons and moving bright solitons are found. The stationary bright solitons are the ground states and possess well-defined spin-parity, a symmetry involving both spatial and spin degrees of freedom; these solitons are real valued but not positive definite, and the number of their nodes depends on the strength of spin-orbit coupling. For the moving bright solitons, their shapes are found to change with velocity due to the lack of Galilean invariance in the system.