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Transversal inhomogeneities in dilute vibrofluidized granular fluids
J Javier Brey1, M J Ruiz-Montero, F Moreno
1Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain.
Summary
Spontaneous symmetry breaking occurs perpendicular to energy flux in vibrofluidized granular systems. Hydrodynamic and simulation methods confirm marginal stability analysis, matching simulation outcomes.
Area of Science:
- Physics
- Granular Materials Science
Background:
- Granular systems exhibit complex behaviors under external stimuli.
- Understanding energy flux effects on granular dynamics is crucial.
Purpose of the Study:
- Investigate spontaneous symmetry breaking in dilute vibrofluidized granular systems.
- Analyze the direction perpendicular to energy flux.
Main Methods:
- Hydrodynamic description.
- Molecular dynamics simulations.
- Direct Monte Carlo simulation of the Boltzmann equation.
- Marginal stability analysis using WKB approximation.
Main Results:
- Hydrodynamic description and simulations show good agreement.
- Marginal stability analysis accurately predicts simulation results.
- Hydrodynamic profiles beyond bifurcation were characterized.
Conclusions:
- The study successfully characterized symmetry breaking in granular systems.
- WKB approximation provides a reliable analytical tool for these systems.