Parametric forcing of a variety of systems like fluids, granular matter, and mechanical systems have shown a rich variety of collective behavior, ranging rom standing waves, hexagons and squares, spatio-temporal chaotic behavior to localized objects. In figure a mechanical oscillon is shown. Unlike fluid dynamics, there is no reliable continuum description of a granular system applicable in a wide range of conditions.

This current project proposes to get an analytical description of the phenomenology observed in parametric forced systems. In particular, we focus on fluidized granular matter system. To study prototype models of particle type solution, like amplitude equations, generalized Swift-Hohenberg model, parametric Ginzburg-Landau equation, and others.

People involved:
-Marcel G Clerc (University of Chile).
-Roberto Kaenkrel (Instituto de Fisica Teorica, Universidad estatal Paulista –Julio de Mezquita Filho, Sao Pablo, Brasil).