INVESTIGADORES
CINCOTTA Pablo Miguel
congresos y reuniones científicas
Título:
Difusión en el espacio de fases
Autor/es:
CLAUDIA GIORDANO; PABLO CINCOTTA; CARLES SIMÓ
Lugar:
La Plata
Reunión:
Congreso; 46 Reunión Anual de la Asociación Argentina de Astronomía; 2003
Institución organizadora:
Asociación Argentina de Astronomía
Resumen:
In this paper we discuss the relevance of diffusive processes in multidimensional Hamiltonian systems. By means of a rather simple model, we give evidence that for moderate-to-strong chaotic systems the stochastic motion remains confined to disjoint domains on the energy surface, at least for mild motion times. We show that only for extremely large time-scales and for rather large perturbations, does the chaotic component appear almost fully connected through the relics of the resonance structure. The discussion whether diffusion over the energy surface could actually occur in asteroidal or galaxy dynamics is also included.
