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chao-dyn1999
An experimental test of the local fluctuation theorem in chains of weakly interacting Anosov systems
Giovanni Gallavotti, Fabio Perroni
An experimental test of a large fluctuation theorem is performed on a chain of coupled ``cat maps''. Our interest is focused on the behavior of a subsystem of this chain. A local e…
chao-dyn1999
Ergodic and chaotic hypotheses: nonequilibrium ensembles in statistical mechanics and turbulence
Giovanni Gallavotti
The ergodic hypothesis outgrew from the ancient conception of motion as periodic or quasi periodic. It did cause a revision of our views of motion, particularly through Boltzmann a…
chao-dyn1998
Hamilton-Jacobi equation, heteroclinic chains and Arnol'd diffusion in three time scales systems
Giovanni Gallavotti, Guido Gentile, Vieri Mastropietro
Interacting systems consisting of two rotators and a point mass near a hyperbolic fixed point are considered, in a case in which the uncoupled systems have three very different cha…