Figure 4
From: Creation of vortices by torque in multidimensional media with inhomogeneous defocusing nonlinearity
The creation of a single vortex filament, orbiting around the center, by torque (5) with p = 40 and W = 3 in the 3D setting.
Shown are intensity iso-surfaces at |u(x,y,z)|2 = 1.
