Gap Solitons in a Spin-Orbit-Coupled Bose-Einstein Condensate
Gap Solitons in a Spin-Orbit-Coupled Bose-Einstein Condensate
We report a diversity of stable gap solitons in a spin-orbit-coupled Bose-Einstein condensate subject to a spatially periodic Zeeman field. It is shown that the solitons can be classified by the main physical symmetries they obey, i.e., symmetries with respect to parity ($P$), time ($T$), and internal degree of freedom, …