Interaction between anomalous vortex beams in nonlocal media

In this paper, the interactional behaviors of anomalous vortex beams in highly nonlocal media are investigated. An analytical expression describing the interaction is given, and some numerical simulations are carried out to illustrate the interactional characteristics. It is found that two interactional anomalous vortex beams always attract each other, and their evolution is periodical. The influence of different relative phases between two anomalous vortex beams on their interaction is presented in details. (C) 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license