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Deutsche Physikalische Gessellschaft IOP Institute of Physics

Drift bifurcation detection for dissipative solitons

A W Liehr1, H U Bödeker1, M C Röttger1, T D Frank2, R Friedrich2 and H-G Purwins1

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We report on the experimental detection of a drift bifurcation for dissipative solitons, which we observe in the form of current filaments in a planar semiconductor–gas-discharge system. By introducing a new stochastic data analysis technique we find that due to a change of system parameters the dissipative solitons undergo a transition from purely noise-driven objects with Brownian motion to particles with a dynamically stabilized finite velocity.


PACS

05.40.Jc Brownian motion

52.80.-s Electric discharges

05.10.Gg Stochastic analysis methods (Fokker-Planck, Langevin, etc.)

02.50.Fz Stochastic analysis

02.30.Oz Bifurcation theory

52.35.Sb Solitons; BGK modes

Subjects

Mathematical physics

Computational physics

Plasma physics

Statistical physics and nonlinear systems

Dates

Issue 1 (July 2003)

Received 25 April 2003

Published 7 July 2003



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