60 citations · 400 across the 30 of their papers we have counts for
6 papers · 1 filter
Effective Equations in complex systems: from Langevin to machine learning
Angelo Vulpiani, Marco Baldovin
The problem of effective equations is reviewed and discussed. Starting from the classical Langevin equation, we show how it can be generalized to Hamiltonian systems with non-stand…
Effective equations for reaction coordinates in polymer transport
Marco Baldovin, Fabio Cecconi, Angelo Vulpiani
In the framework of the problem of finding proper reaction coordinates (RCs) for complex systems and their effective evolution equations, we consider the case study of a polymer ch…
Irreversibility and typicality: A simple analytical result for the Ehrenfest model
Marco Baldovin, Lorenzo Caprini, Angelo Vulpiani
With the aid of simple analytical computations for the Ehrenfest model, we clarify some basic features of macroscopic irreversibility. The stochastic character of the model allows…
Statistical mechanics of systems with long-range interactions and negative absolute temperature
Fabio Miceli, Marco Baldovin, Angelo Vulpiani
A Hamiltonian model living in a bounded phase space and with long-range interactions is studied. It is shown, by analytical computations, that there exists an energy interval in wh…
Derivation of a Langevin equation in a system with multiple scales: the case of negative temperatures
Marco Baldovin, Angelo Vulpiani, Andrea Puglisi +1
We consider the problem of building a continuous stochastic model, i.e. a Langevin or Fokker-Planck equation, through a well-controlled coarse-graining procedure. Such a method usu…
Langevin equations from experimental data: the case of rotational diffusion in granular media
Marco Baldovin, Andrea Puglisi, Angelo Vulpiani
A model has two main aims: predicting the behavior of a physical system and understanding its nature, that is how it works, at some desired level of abstraction. A promising recent…