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General aspects of the Fluctuation-Dissipation Relation (FDR), and Response Theory are considered. After analyzing the conceptual and historical relevance of fluctuations in statistical mechanics, weâ€¦ (More)

We address the problem of the so-called " granular gases " , i.e. gases of massive particles in rapid movement undergoing inelastic collisions. We introduce a class of models of driven granular gasesâ€¦ (More)

- Claudio Maggi, Umberto Marini Bettolo Marconi, Nicoletta Gnan, Roberto Di Leonardo
- Scientific reports
- 2015

We derive the stationary probability distribution for a non-equilibrium system composed by an arbitrary number of degrees of freedom that are subject to Gaussian colored noise and a conservativeâ€¦ (More)

- Fabio Cecconi, Fabiana Diotallevi, Umberto Marini Bettolo Marconi, Andrea Puglisi
- The Journal of chemical physics
- 2004

We study the properties of a one-dimensional (1D) granular gas consisting of N hard rods on a line of length L (with periodic boundary conditions). The particles collide inelastically and areâ€¦ (More)

- Umberto Marini Bettolo Marconi, Nicoletta Gnan, Matteo Paoluzzi, Claudio Maggi, Roberto Di Leonardo
- Scientific reports
- 2016

We derive an analytic expression for the distribution of velocities of multiple interacting active particles which we test by numerical simulations. In clear contrast with equilibrium we find thatâ€¦ (More)

- Ciro Cattuto, Richard Brito, Umberto Marini Bettolo Marconi, Franco Nori, Rodrigo Soto
- Physical review letters
- 2006

We numerically investigate the behavior of driven noncohesive granular media and find that two fixed large intruder particles, immersed in a sea of small particles, experience, in addition to aâ€¦ (More)

- Andrea Baldassarri, Umberto Marini Bettolo Marconi, Andrea Puglisi, Angelo Vulpiani
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2001

We study fluidized granular gases in a stationary state determined by the balance between external driving and bulk dissipation. The two considered situations are inspired by recent experiments,â€¦ (More)

- Fabio Cecconi, Andrea Puglisi, Umberto Marini Bettolo Marconi, Angelo Vulpiani
- Physical review letters
- 2003

We study the behavior of two particles moving in a bistable potential, colliding inelastically with each other and driven by a stochastic heat bath. The system has the tendency to clusterize, placingâ€¦ (More)

- Fabio Cecconi, Umberto Marini Bettolo Marconi, Fabiana Diotallevi, Andrea Puglisi
- The Journal of chemical physics
- 2004

A simple model of inelastic hard rods subject to a one-dimensional array of identical wells is introduced. The energy loss due to inelastic collisions is balanced by the work supplied by an externalâ€¦ (More)

- Giacomo Gradenigo, Andrea Puglisi, Alessandro Sarracino, Umberto Marini Bettolo Marconi
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2012

We study the stationary state of a one-dimensional kinetic model where a probe particle is driven by an external field E and collides, elastically or inelastically, with a bath of particles atâ€¦ (More)