Faraday Waves under Time-Reversed Excitation

Dirk Pietschmann, Ralf Stannarius, Christian Wagner, and Thomas John
Phys. Rev. Lett. 110, 094503 – Published 1 March 2013


Do parametrically driven systems distinguish periodic excitations that are time mirrors of each other? Faraday waves in a Newtonian fluid are studied under excitation with superimposed harmonic wave forms. We demonstrate that the threshold parameters for the stability of the ground state are insensitive to a time inversion of the driving function. This is a peculiarity of some dynamic systems. The Faraday system shares this property with standard electroconvection in nematic liquid crystals [J. Heuer et al., Phys. Rev. E 78, 036218 (2008)]. In general, time inversion of the excitation affects the asymptotic stability of a parametrically driven system, even when it is described by linear ordinary differential equations. Obviously, the observed symmetry has to be attributed to the particular structure of the underlying differential equation system. The pattern selection of the Faraday waves above threshold, on the other hand, discriminates between time-mirrored excitation functions.

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  • Received 6 November 2012


© 2013 American Physical Society

Authors & Affiliations

Dirk Pietschmann1, Ralf Stannarius1, Christian Wagner2, and Thomas John1,2

  • 1Otto-von-Guericke-Universität Magdeburg, D-39106 Magdeburg, Germany
  • 2Universität des Saarlandes, D-66041 Saarbrücken, Germany

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Vol. 110, Iss. 9 — 1 March 2013

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