Ultrasonic cavity solitons

Details Ultrasonic cavity solitons Ultrasonic cavity solitons

2007-02-06

arxiv.org/abs/nlin/0702009v1

Nonlinear Sciences

Pattern Formation and Solitons

Scientific paper

We report on a new type of localized structure, an ultrasonic cavity soliton, supported by large aspect-ratio acoustic resonators containing viscous media. The spatio-temporal dynamics of this system is analyzed on the basis of a generalized Swift-Hohenberg equation, derived from the microscopic equations under conditions close to nascent bistability. These states of the acoustic and thermal fields are robust structures, existing whenever a spatially uniform solution and a periodic pattern coexist. An analytical solution for the ultrasonic cavity soliton is also presented.

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