Recurrent noise-induced phase singularities in drifting patterns

M. G. Clerc, S. Coulibaly, F. Del Campo, MONICA AMPARO GARCIA ÑUSTES, E. Louvergneaux, M. Wilson

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We show that the key ingredients for creating recurrent traveling spatial phase defects in drifting patterns are a noise-sustained structure regime together with the vicinity of a phase transition, that is, a spatial region where the control parameter lies close to the threshold for pattern formation. They both generate specific favorable initial conditions for local spatial gradients, phase, and/or amplitude. Predictions from the stochastic convective Ginzburg-Landau equation with real coefficients agree quite well with experiments carried out on a Kerr medium submitted to shifted optical feedback that evidence noise-induced traveling phase slips and vortex phase-singularities.

Original languageEnglish
Article number050902
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume92
Issue number5
DOIs
StatePublished - 6 Nov 2015

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