Vector vortex solitons in two-component Bose–Einstein condensates with modulated nonlinearities and a harmonic trap. Issue 13 (29th July 2018)

• Record Type: Journal Article
• Authors: Xu, Si-Liu; Wang, Ze-Qiang; He, Jun-Rong; Xue, Li; Belić, Milivoj R.
• Is Part Of: Journal of modern optics. Volume 65:Issue 13(2018)
• Page Start: 1542
• Page End: 1548
• Publication Date: 2018-07-29
• Subjects: vector solitary waves -- Bose–Einstein condensates -- Spatially modulated nonlinearity; Optics -- Periodicals; 535
• DOI: 10.1080/09500340.2018.1455915
• Languages: English
• ISSNs: 0950-0340

Abstract

Abstract: We introduce vector solitary waves in two-component Bose–Einstein condensates with spatially modulated nonlinearity coefficients and a harmonic trapping potential. Using the self-similarity method, novel vector solitary waves are built with the help of Whittaker function, including multipole solutions and necklace rings. The stability of vortex soliton pairs is examined by direct numerical simulation; the results show that a new class of stable low-order vortex soliton pairs with n = 2 and m ≤ 3 can be supported by the spatially modulated interaction in the harmonic trap. Higher order vector-vortex soliton is found unstable over prolonged distances.