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DY: Fachverband Dynamik und Statistische Physik
DY 47: Focus Session: Nonlinear Dynamics of the Heart I (joint session DY/BP)
DY 47.7: Vortrag
Donnerstag, 19. März 2020, 11:45–12:00, ZEU 118
Control and self-termination of spiral wave chaos — •Thomas Lilienkamp1,2 and Ulrich Parlitz1,2,3 — 1Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany — 2German Center for Cardiovascular Research (DZHK), Göttingen, Germany — 3Institut für Dynamik Komplexer Systeme, Georg-August Universität, Göttingen, Germany
During life threatening cardiac arrhythmias like ventricular fibrillation the electrical excitation dynamics inside the heart is governed by chaotic spiral/scroll wave propagation. In experiments, it is frequently observed that the chaotic dynamics can also terminate by itself. This phenomenon can also be reproduced in numerical simulations. We demonstrate in simulations, how a system of chaotic spiral wave dynamics can be controlled using small but finite perturbations which are locallized in space and time, by exploiting the state space structure. With this, we show that a control of such systems can be achieved in principle by a minimal interaction with the system.