1,721,204 research outputs found
Mapping of frustrated spin systems into percolation models and Monte Carlo cluster dynamics
No full textDomains growth and packing properties in driven granular media subject to gravity
No full textWe explored dynamical properties of recently introduced models for granular media under gentle shaking, highlighting and elucidating, in particular, the formation and growth of domains of grains
Dynamical response functions in models of vibrated granular media
No full textIn a schematic lattice gas models for vibrated dry granular media, we studied the dynamical response of the system to small perturbations of shaking amplitudes and its relations with the characteristic fluctuations. Strong off equilibrium features appear and a generalized version of the fluctuation dissipation theorem is introduced. The relations with thermal glassy systems and the role of Edwards’ compactivity are discussed
Percolation and cluster formalism in continuous spin systems
No full textWe introduced the generalization of Kasteleyn-Fortuin cluster formalism to O(n) models
Force correlations and arches formation in granular assemblies
No full textIn the context of a microscopic schematic scalar model we studied the effects of spatial correlations in force transmission in granular assemblies. We showed, in particular, the origin of the anomalous distribution of stress in such systems and its key controlling parameters
- …
