title: Interactions of nonlocal dark solitons under competing cubic-quintic nonlinearities.
abstract: We investigate analytically and numerically the interactions of dark solitons under competing nonlocal cubic and local quintic nonlinearities. It is shown that the self-defocusing quintic nonlinearity will strengthen the attractive interaction and decrease the relative distance between solitons, whereas the self-focusing quintic nonlinearity will enhance the repulsive interaction and increase soliton separation. We demonstrate these results by approximate variational approach and direct numerical simulation.
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Ming
authors.initials: M
authors.lastname: Shen
authors.forename: Qian
authors.initials: Q
authors.lastname: Kong
authors.forename: Jielong
authors.initials: J
authors.lastname: Shi
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Krolikowski