Dresden 2017 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 43: Nonlinear Dynamics, Synchronizsation and Chaos
DY 43.12: Vortrag
Donnerstag, 23. März 2017, 12:30–12:45, ZEU 118
Stabilization of three-dimensional scroll waves by heterogeneities — •Florian Spreckelsen1, Daniel Hornung1, Oliver Steinbock2, Ulrich Parlitz1,3,4, and Stefan Luther1,3,4 — 1Max Planck Institute for Dynamics and Self-Organization, Am Faßberg 17, 37077 Göttingen, Germany — 2Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306-4390, United States — 3Institute for Nonlinear Dynamics, Georg-August-Universität Göttingen, Am Faßberg 17, 37077 Göttingen, Germany — 4German Centre for Cardiovascular Research, partner site Göttingen, 37077 Göttingen, Germany
Scroll waves in a three-dimensional excitable medium with negative filament tension may break up and display spatiotemporal chaos. The presence of non-excitable heterogeneities can influence the evolution of the medium, in particular scroll waves may pin to such heterogeneities. We show [1] thin rodlike heterogeneities suppress otherwise developing spatiotemporal chaos and additionally clear out already existing chaotic excitation patterns.
[1] F. Spreckelsen, D. Hornung, O. Steinbock, U. Parlitz, and S. Luther. Phys. Rev. E 92 (2015): 42920. doi:10.1103/PhysRevE.92.042920.