title: Attraction of nonlocal dark optical solitons.
abstract: We study the formation and interaction of spatial dark optical solitons in materials with a nonlocal nonlinear response. We show that unlike in local materials, where dark solitons typically repel, the nonlocal nonlinearity leads to a long-range attraction and formation of stable bound states of dark solitons.
authors.affiliation: Informatics and Mathematical Modelling, Technical University of Denmark, 2800 Kongens Lyngby, Denmark.
authors.forename: Nikola I
authors.initials: NI
authors.lastname: Nikolov
authors.forename: Dragomir
authors.initials: D
authors.lastname: Neshev
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Królikowski
authors.forename: Ole
authors.initials: O
authors.lastname: Bang
authors.forename: Jens Juul
authors.initials: JJ
authors.lastname: Rasmussen
authors.forename: Peter L
authors.initials: PL
authors.lastname: Christiansen