title: Rotating optical soliton clusters.
abstract: We introduce the concept of soliton clusters--multisoliton bound states in a homogeneous bulk optical medium--and reveal a key physical mechanism for their stabilization associated with a staircaselike phase distribution that induces a net angular momentum and leads to cluster rotation. The ringlike soliton clusters provide a nontrivial generalization of the concepts of two-soliton spiraling, optical vortex solitons, and necklace-type optical beams.
authors.affiliation: Nonlinear Physics Group, Research School of Physical Sciences and Engineering, The Australian National University, Canberra ACT 0200, Australia.
authors.forename: Anton S
authors.initials: AS
authors.lastname: Desyatnikov
authors.forename: Yuri S
authors.initials: YS
authors.lastname: Kivshar