Interaction of vortices in a complex vector field and stability of a "Vortex molecule"
We consider interaction of vortices in the vector complex Ginzburg-Landau equation (CVGLE). In the limit of small field coupling, it is found analytically that the interaction between well-separated defects in two different fields is long ranged, in contrast to the interaction between defects in the same field which falls off exponentially. In a certain region of parameters of CVGLE, we find stable rotating bound states of two defects-a "vortex molecule."
Aranson
IS
Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA.
Pismen
LM