Twin-vortex solitons in nonlocal nonlinear media
Twin-vortex solitons in nonlocal nonlinear media
We consider soliton formation in thermal nonlinear media bounded by rectangular cross sections and uncover what we believe to be a new class of nonlinear stationary topological state. Specifically, we find that stationary higher-order vortex states in standard shapes do not exist, but rather they take the form of multiple …