TY  - JOUR
A1  - Tyulkina, Irina
A1  - Goldobin, Denis S.
A1  - Klimenko, Lyudmila S.
A1  - Pikovskij, Arkadij
T1  - Dynamics of noisy oscillator populations beyond the Ott-Antonsen Ansatz
T2  - Physical review letters
N2  - We develop an approach for the description of the dynamics of large populations of phase oscillators based on "circular cumulants" instead of the Kuramoto-Daido order parameters. In the thermodynamic limit, these variables yield a simple representation of the Ott-Antonsen invariant solution [E. Ott and T. M. Antonsen, Chaos 18, 037113 (2008)] and appear appropriate for constructing perturbation theory on top of the Ott-Antonsen ansatz. We employ this approach to study the impact of small intrinsic noise on the dynamics. As a result, a closed system of equations for the two leading cumulants, describing the dynamics of noisy ensembles, is derived. We exemplify the general theory by presenting the effect of noise on the Kuramoto system and on a chimera state in two symmetrically coupled populations.
Y1  - 2018
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/52721
SN  - 0031-9007
SN  - 1079-7114
VL  - 120
IS  - 26
PB  - American Physical Society
CY  - College Park
ER  -