We classify all possible fractional charge vortices of charge less than unity in spin-1 and spin-2 polar and cyclic Bose-Einstein condensates (BECs) with zero magnetization. Statics and dynamics of these vortices in quasi-two-dimensional spinor BECs are studied employing an accurate numerical solution and a Lagrange variational approximation. The results for density and collective-mode oscillation are illustrated using the fractional-charge BEC vortex of $^{23}\mathrm{Na}$ and $^{87}\mathrm{Rb}$ atoms with realistic interaction and trapping potential parameters.We classify all possible fractional charge vortices of charge less than unity in spin-1 and spin-2 polar and cyclic Bose-Einstein condensates (BECs) with zero magnetization. Statics and dynamics of these vortices in quasi-two-dimensional spinor BECs are studied employing an accurate numerical solution and a Lagrange variational approximation. The results for density and collective-mode oscillation are illustrated using the fractional-charge BEC vortex of $^{23}\mathrm{Na}$ and $^{87}\mathrm{Rb}$ atoms with realistic interaction and trapping potential parameters.

arXiv:1601.01541Physical Review AJan 29, 201611 citations

^{23}\mathrm{Na}

and

^{87}\mathrm{Rb}

atoms with realistic interaction and trapping potential parameters.