Localization of Waves without Bistability: Worms in Nematic Electroconvection

Details Localization of Waves without Bistability: Worms in Nematic Electroconvection Localization of Waves without Bistability: Worms in Nematic Electroconvection

1998-02-09

arxiv.org/abs/patt-sol/9802003v1

Nonlinear Sciences

Pattern Formation and Solitons

4 pages revtex 5 figures

Scientific paper

10.1103/PhysRevLett.81.333

A general localization mechanism for waves in dissipative systems is identified that does not require the bistability of the basic state and the nonlinear plane-wave state. The mechanism explains the two-dimensional localized wave structures (`worms') that recently have been observed in experiments on electroconvection in nematic liquid crystals where the transition to extended waves is supercritical. The mechanism accounts for the propagation direction of the worms and certain aspects of their interaction. The dynamics of the localized waves can be steady or irregular.

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