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Asymmetric bound states of spiral pairs in excitable media
Christian Zemlin1, Karthik Mukund, Marcel Wellner
1Department of Pharmacology, SUNY Upstate Medical University, Syracuse, NY 13210, USA.
Abstract:
We present a stable regime of asymmetric bound states for spiral pairs in a generic numerical model of a homogeneous excitable medium. In this regime, one spiral tip (slave) rotates around the other (master). Master-slave dynamics occur for both same-chirality and opposite-chirality spiral pairs in a range of parameters and initial conditions. We study the dependency of master-slave characteristics on the medium's excitation threshold and present a phenomenological model that accounts for the qualitative properties of master-slave dynamics.
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