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Topological charge selection rule for phase singularities

AuthorsZacarés, Mario; García March, Miguel Ángel; Vijande, Javier ; Ferrando Cogollos, Albert; Merino Cué, Emma
Issue Date14-Oct-2009
PublisherAmerican Physical Society
CitationPhysical Review - Section A - Atomic Molecular and Optical Physics 80 (4): 043812 (2009)
AbstractWe present a study of the dynamics and decay pattern of phase singularities due to the action of a system with a discrete rotational symmetry of finite order. A topological charge conservation rule is identified. The role played by the underlying symmetry is emphasized. An effective model describing the short range dynamics of the vortex clusters has been designed. A method to engineer any desired configuration of clusters of phase singularities is proposed. Its flexibility to create and control clusters of vortices is discussed.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevA.80.043812
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