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math.DS2023
Energy cascade for the Klein-Gordon lattice
Stefano Pasquali
We study analytically the dynamics of a -dimensional Klein-Gordon lattice with periodic boundary conditions, for . We consider initial data supported on one low-freque…
math.DS2018★ 29 cited
The Fermi-Pasta-Ulam problem and its underlying integrable dynamics: an approach through Lyapunov Exponents
G. Benettin, S. Pasquali, A. Ponno
FPU models, in dimension one, are perturbations either of the linear model or of the Toda model; perturbations of the linear model include the usual -model, perturbations of Tod…