Defect-Mediated Stability: An Effective Hydrodynamic Theory of Spatio-Temporal Chaos

Preprint

9 December 1994

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9412041

Abstract

Spatiotemporal chaos (STC) exhibited by the Kuramoto-Sivashinsky (KS) equation is investigated analytically and numerically. An effective stochastic equation belonging to the KPZ universality class is constructed by incorporating the chaotic dynamics of the small KS system in a coarse-graining procedure. The bare parameters of the effective theory are computed approximately. Stability of the system is shown to be mediated by space-time defects that are accompanied by stochasticity. The method of analysis and the mechanism of stability may be relevant to a class of STC problems.

Keywords

EFFECTIVE HYDRODYNAMIC
SPATIOTEMPORAL CHAOS
HYDRODYNAMIC THEORY
MEDIATED STABILITY
DEFECT MEDIATED
TEMPORAL CHAOS
STOCHASTIC
STC

All Related Versions

Version 1, 1994-12-09, ArXiv
Published version: Physica D: Nonlinear Phenomena, 84 (3-4), 494.

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