External Fluctuations in Front Propagation

We study the effects of external noise in a one-dimensional model of front propagation. Noise is introduced through the fluctuations of a control parameter leading to a multiplicative stochastic partial differential equation. Analytical and numerical results for the front shape and velocity are pres...

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Bibliographic Details
Authors: Armero Rovira, Juan, Sancho, José M., Casademunt i Viader, Jaume, Lacasta Palacio, Ana María, Ramírez Piscina, Laureano, Sagués i Mestre, Francesc
Format: article
Status:Published version
Publication Date:1996
Country:España
Institution:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repository:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/13166
Online Access:https://hdl.handle.net/2445/13166
Access Level:Open access
Keyword:Teoria quàntica
Dinàmica de fluids
Quantum theory
Fluid dynamics
Description
Summary:We study the effects of external noise in a one-dimensional model of front propagation. Noise is introduced through the fluctuations of a control parameter leading to a multiplicative stochastic partial differential equation. Analytical and numerical results for the front shape and velocity are presented. The linear-marginal-stability theory is found to increase its range of validity in the presence of external noise. As a consequence noise can stabilize fronts not allowed by the deterministic equation.

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