Spiral waves in systems with fractal heterogeneity

Jun Tang, Jin-Ming Luo, Jun Ma, Ming Yi and Xian-Qing Yang

Physica A: Statistical Mechanics and its Applications, 2013, vol. 392, issue 22, 5764-5771

Abstract: The influence of fractal heterogeneity on a spiral wave in an excitable system is numerically studied based on the Barkley model. The heterogeneity is implemented by letting the diffusive coefficient in the heterogeneous area be different from the other area. The results show that fruitful transitions of the spiral tip trajectories are induced by the fractal heterogeneity. In particular, when the heterogeneity increases to a sufficiently high level the spiral tip trajectory always changes to a stable rotating trajectory (closed-circle tip trajectory), whatever transitions have been induced by a lower level of heterogeneity. We qualitatively ascribe the transitions to the attraction on the spiral tip exerted by the heterogeneous area.

Keywords: Fractal heterogeneity; Spiral wave; Tip trajectory (search for similar items in EconPapers)
Date: 2013
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:392:y:2013:i:22:p:5764-5771

DOI: 10.1016/j.physa.2013.07.043

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