Analytical theory for dark soliton interaction in nonlocal nonlinear materials with arbitrary degree of nonlocality

Abstract

We investigate theoretically the interaction of dark solitons in materials with a spatially nonlocal nonlinearity. In particular we do this analytically and for arbitrary degree of nonlocality. We employ the variational technique to show that nonlocality induces an attractive force in the otherwise repulsive soliton interaction.

submitted for publication