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Published on: September 21, 2017
Critical properties of the synchronization transition in space-time chaos
Volker Ahlers1, Arkady Pikovsky
1Department of Physics, University of Potsdam, Postfach 601553, D-14415 Potsdam, Germany.
Abstract:
We study two coupled spatially extended dynamical systems which exhibit space-time chaos. The transition to the synchronized state is treated as a nonequilibrium phase transition, where the average synchronization error is the order parameter. The transition in one-dimensional systems is found to be generically in the universality class of the Kardar-Parisi-Zhang equation with a growth-limiting term ("bounded KPZ"). For systems with very strong nonlinearities in the local dynamics, however, the transition is found to be in the universality class of directed percolation.
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