138 citations · 394 across the 11 of their papers we have counts for
11 papers
Chiral active matter in external potentials
Lorenzo Caprini, Hartmut Löwen, Umberto Marini Bettolo Marconi
We investigate the interplay between chirality and confinement induced by the presence of an external potential. For potentials having radial symmetry, the circular character of th…
Inhomogeneous entropy production in active crystals with point imperfections
Lorenzo Caprini, Hartmut Löwen, Umberto Marini Bettolo Marconi
The presence of defects in solids formed by active particles breaks their discrete translational symmetry. As a consequence, many of their properties become space-dependent and dif…
Entropons as collective excitations in active solids
Lorenzo Caprini, Umberto Marini Bettolo Marconi, Andrea Puglisi +1
The vibrational dynamics of solids is described by phonons constituting basic collective excitations in equilibrium crystals. Here we consider an active crystal composed of self-pr…
Dynamics of active particles with space-dependent swim velocity
Lorenzo Caprini, Umberto Marini Bettolo Marconi, René Wittmann +1
We study the dynamical properties of an active particle subject to a swimming speed explicitly depending on the particle position. The oscillating spatial profile of the swim veloc…
Correlated escape of active particles across a potential barrier
Lorenzo Caprini, Fabio Cecconi, Umberto Marini Bettolo Marconi
We study the dynamics of one-dimensional active particles confined in a double-well potential, focusing on the escape properties of the system, such as the mean escape time from a…
Collective effects in confined Active Brownian Particles
Lorenzo Caprini, Claudio Maggi, Umberto Marini Bettolo Marconi
We investigate a two-dimensional system of active particles confined to a narrow annular domain. Despite the absence of explicit interactions among the velocities or the active for…
Pressure in an exactly solvable model of active fluid
Umberto Marini Bettolo Marconi, Claudio Maggi, Matteo Paoluzzi
We consider the pressure in the steady-state regime of three stochastic models characterized by self-propulsion and persistent motion and widely employed to describe the behavior o…
Tracer diffusion of hard-sphere binary mixtures under nano-confinement
Umberto Marini Bettolo Marconi, Paolo Malgaretti, Ignacio Pagonabarraga
The physics of diffusion phenomena in nano and micro channels has attracted a lot of attention in recent years, due to its close connection with many technological, medical and ind…
Towards a statistical mechanical theory of active fluids
Umberto Marini Bettolo Marconi, Claudio Maggi
We present a stochastic description of a model of N mutually repelling active spheres in the presence of external fields and characterize its steady state behavior. To reproduce th…
Dynamic density functional theory versus Kinetic theory of simple fluids
Umberto Marini Bettolo Marconi, Simone Melchionna
By combining methods of kinetic and density functional theory, we present a description of molecular fluids which accounts for their microscopic structure and thermodynamic propert…
Thermal convection in mono-disperse and bi-disperse granular gases: A simulation study
Daniela Paolotti, Alain Barrat, Umberto Marini Bettolo Marconi +1
We present results of a simulation study of inelastic hard-disks vibrated in a vertical container. An Event-Driven Molecular Dynamics method is developed for studying the onset of…