Interactions of parametrically driven dark solitons. II. Néel-Bloch interactions.
The interaction between a Bloch and a Néel wall in the parametrically driven nonlinear Schrödinger equation is studied by following the dissociation of their unstable bound state. Mathematically, the analysis focuses on the splitting of a fourfold zero eigenvalue associated with a pair of infinitely separated Bloch and Néel walls. It is shown that a Bloch and a Néel wall interact as two classical particles, one with positive and the other one with negative mass.
Barashenkov
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Department of Physics, University of Bayreuth, D-95440 Bayreuth, Germany. Igor.Barashenkov@uct.ac.za
Woodford
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