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Hydrodynamics of simple active liquids: the emergence of velocity correlations
Umberto Marini Bettolo Marconi, Andrea Puglisi, Lorenzo Caprini
We derive the Hydrodynamics for a system of N active, spherical, underdamped particles, interacting through conservative forces. At the microscopic level, we represent the evolutio…
Linear response and correlation of a self-propelled particle in the presence of external fields
Lorenzo Caprini, Umberto Marini Bettolo Marconi, Angelo Vulpiani
We study the non-equilibrium properties of non interacting active Ornstein-Uhlenbeck particles (AOUP) subject to an external nonuniform field using a Fokker-Planck approach with a…
Effective equilibrium picture in model with exponentially correlated noise
Matteo Paoluzzi, Umberto Marini Bettolo Marconi, Claudio Maggi
We study the effect of exponentially correlated noise on model in the limit of small correlation time discussing the order-disorder transition in mean-field and the topologica…
Heat, temperature and Clausius inequality in a model for active brownian particles
Umberto Marini Bettolo Marconi, Andrea Puglisi, Claudio Maggi
Methods of stochastic thermodynamics and hydrodynamics are applied to the a recently introduced model of active particles. The model consists of an overdamped particle subject to G…
Critical Phenomena in Active Matter
Matteo Paoluzzi, Claudio Maggi, Umberto Marini Bettolo Marconi +1
We investigate the effect of self-propulsion on a mean-field order-disorder transition. Starting from a scalar field theory subject to an exponentially correlated noise, we e…
Velocity distribution in active particles systems
Umberto Marini Bettolo Marconi, Nicoletta Gnan, Matteo Paoluzzi Claudio Maggi +1
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 equilibr…