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26 papers · 1 filter
Stochastic resonance between dissipative structures in a bistable noise-sustained dynamics
B. von Haeften, G. Izús, S. Mangioni +2
We study an extended system that without noise shows a monostable dynamics, but when submitted to an adequate multiplicative noise, an effective bistable dynamics arise. The stocha…
Bulk Mediated Surface Diffusion: Finite System Case
Jorge A. Revelli, Carlos. E. Budde, Domingo Prato +1
We address the dynamics of adsorbed molecules (a fundamental issue in surface physics) within the framework of a Master Equation scheme, and study the diffusion of particles in a f…
Correlation between Risk Aversion and Wealth distribution
J. R. Iglesias, S. Goncalves, G. Abramson +1
Different models of capital exchange among economic agents have been proposed recently trying to explain the emergence of Pareto's wealth power law distribution. One important fact…
Hodge structures for orbifold cohomology
Javier Fernandez
We construct a polarized Hodge structure on the primitive part of Chen and Ruan's orbifold cohomology for projective -orbifolds satisfying a ``Hard Lefschetz…
Associative memory on a small-world neural network
Luis G. Morelli, Guillermo Abramson, Marcelo N. Kuperman
We study a model of associative memory based on a neural network with small-world structure. The efficacy of the network to retrieve one of the stored patterns exhibits a phase tra…
Mechanical versus thermodynamical melting in pressure-induced amorphization: the role of defects
S. Bustingorry, E. A. Jagla
We study numerically an atomistic model which is shown to exhibit a one--step crystal--to--amorphous transition upon decompression. The amorphous phase cannot be distinguished from…