Regensburg 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

BP: Fachverband Biologische Physik

BP 32: Chimera State: Symmetry breaking in dynamical networks (joint session SOE/DY/BP)

BP 32.3: 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).