139 citations · 198 across the 9 of their papers we have counts for
9 papers
Boltzmann conjecture, meta-equilibrium entropy, second law, chaos and irreversibility for many body systems
Piero Cipriani
A heuristic generalization of the Boltzmann-Gibbs microcanonical entropy is proposed, able to describe meta-equilibrium features and evolution of macroscopic systems. Despite its s…
From anomalous energy diffusion to Levy walks and heat conductivity in one-dimensional systems
P. Cipriani, S. Denisov, A. Politi
The evolution of infinitesimal, localized perturbations is investigated in a one-dimensional diatomic gas of hard-point particles (HPG) and thereby connected to energy diffusion. A…
On the definition of temperature in FPU systems
A. Carati, P. Cipriani, L. Galgani
It is usually assumed, in classical statistical mechanics, that the temperature should coincide, apart from a suitable constant factor, with the mean kinetic energy of the particle…
An open-system approach for the characterization of spatio-temporal chaos
Piero Cipriani, Antonio Politi
We investigate the structure of the invariant measure of space-time chaos by adopting an "open-system" point of view. We consider large but finite windows of formally infinite one-…
Fast instability indicator in few dimensional dynamical systems
Piero Cipriani, Maria Teresa Di Bari
Using the tools of Differential Geometry, we define a new <<fast>> chaoticity indicator, able to detect dynamical instability of trajectories much more effectively, (i.e. "quickly"…
On the clustering phase transition in self-gravitating N-body systems
Monica Cerruti-Sola, Piero Cipriani, Marco Pettini
The thermodynamic behaviour of self-gravitating -body systems has been worked out by borrowing a standard method from Molecular Dynamics: the time averages of suitable quantitie…