Regensburg 2016 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 20: Chimera State: Symmetry breaking in dynamical networks (joint session DY/SOE accompanying symposium SYCS)
DY 20.3: Vortrag
Dienstag, 8. März 2016, 14:30–14:45, H36
Chimera patterns under the impact of noise — •Sarah A. M. Loos1, Jens Christian Claussen2, Eckehard Schöll1, and Anna Zakharova1 — 1Institut für Theoretische Physik, TU Berlin, Hardenbergstraße 36, D-10623 Berlin, Germany — 2Computational Systems Biology Lab, Campus Ring 1, Jacobs University Bremen, D- 28759 Bremen, Germany
We investigate two types of chimera states, i.e., patterns consisting of coexisting spatially separated domains with coherent and incoherent dynamics, under the influence of noise [1]. Both chimera states arise in ring networks of Stuart-Landau oscillators with symmetry-breaking coupling [2]. Amplitude chimeras are characterized by temporally periodic dynamics throughout the whole network, but spatially incoherent behavior with respect to the amplitudes in a part of the system. They are long-living transients.
Chimera death states generalize chimeras to stationary inhomogeneous patterns (oscillation death), which combine spatially coherent and incoherent domains. We analyze the impact of random perturbations on their occurrence and on their lifetimes, addressing the question of robustness of chimera states in the presence of additive white noise.
S. A. M. Loos et al., arXiv:1508.04010v2, (2015).
A. Zakharova et al., Phys. Rev. Lett. 112, 154101 (2014).