Zobrazeno 1 - 10
of 229
pro vyhledávání: '"Marconi, Umberto Marini Bettolo"'
Biological organisms often have elongated, flexible structures with some degree of chirality in their bodies or movements. In nature, these organisms frequently take advantage of self-encapsulation mechanisms that create folded configurations, changi
Externí odkaz:
http://arxiv.org/abs/2410.02567
We study a repulsive thermal system governed by odd interactions. The interplay between oddness and inertia induces a non-equilibrium phase transition from a homogeneous to a non-homogeneous phase, characterized by bubbles induced by odd interactions
Externí odkaz:
http://arxiv.org/abs/2407.06837
We study the collective vibrational excitations of crystals under out-of-equilibrium steady conditions that give rise to entropy production. Their excitation spectrum comprises equilibrium-like phonons of thermal origin and additional collective exci
Externí odkaz:
http://arxiv.org/abs/2307.13306
Publikováno v:
Soft Matter 19, 6234-6246, 2023
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 the trajectories induced by the chiral motion reduces the spatial fluctu
Externí odkaz:
http://arxiv.org/abs/2306.11133
Publikováno v:
J. Phys. A: Math. Theor. 56 465001, 2023
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 different from those characterizing perfectly ordered structures. Motivat
Externí odkaz:
http://arxiv.org/abs/2306.06400
Publikováno v:
J. Chem. Phys. 159, 041102 (2023)
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-propelled particles which bring the system into a non-equilibrium steady
Externí odkaz:
http://arxiv.org/abs/2207.02369
We investigate how the competing presence of a nonuniform motility landscape and an external confining field affects the properties of active particles. We employ the active Ornstein-Uhlenbeck particle (AOUP) model with a periodic swim velocity profi
Externí odkaz:
http://arxiv.org/abs/2203.00603
Publikováno v:
Soft Matter, 2022,18, 1412-1422
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 velocity considered in this paper takes inspiration from experimental studi
Externí odkaz:
http://arxiv.org/abs/2111.10304
Publikováno v:
J. Chem. Phys. 155, 234902 (2021)
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 well. We first consider a single-particle both in near and far-from-eq
Externí odkaz:
http://arxiv.org/abs/2110.03042
Publikováno v:
New J. Phys. 23 103024, 2021
We derive the Hydrodynamics for a system of N active, spherical, underdamped particles, interacting through conservative forces. At the microscopic level, we represent the evolution of the particles in terms of the Kramers equation for the probabilit
Externí odkaz:
http://arxiv.org/abs/2105.13832