Time irreversibility in active matter, from micro to macro

J O'Byrne, Y Kafri, J Tailleur, F van Wijland - Nature Reviews Physics, 2022 - nature.com
Active matter encompasses systems whose individual constituents dissipate energy to exert
propelling forces on their environment. These systems exhibit dynamical phenomena with …

Spontaneous velocity alignment in motility-induced phase separation

L Caprini, U Marini Bettolo Marconi, A Puglisi - Physical review letters, 2020 - APS
We study a system of purely repulsive spherical self-propelled particles in the minimal setup
inducing motility-induced phase separation (MIPS). We show that, even if explicit alignment …

Inertial self-propelled particles

L Caprini, U Marini Bettolo Marconi - The Journal of Chemical Physics, 2021 - pubs.aip.org
We study how inertia affects the behavior of self-propelled particles moving through a
viscous solvent by employing the underdamped version of the active Ornstein–Uhlenbeck …

Analytic solution of an active Brownian particle in a harmonic well

M Caraglio, T Franosch - Physical Review Letters, 2022 - APS
We provide an analytical solution for the time-dependent Fokker-Planck equation for a two-
dimensional active Brownian particle trapped in an isotropic harmonic potential. Using the …

Hidden velocity ordering in dense suspensions of self-propelled disks

L Caprini, UMB Marconi, C Maggi, M Paoluzzi… - Physical Review …, 2020 - APS
Recent investigations of the phase diagram of spherical, purely repulsive, active particles
established the existence of a transition from a liquidlike to a solidlike phase analogous to …

The entropy production of Ornstein–Uhlenbeck active particles: a path integral method for correlations

L Caprini, UMB Marconi, A Puglisi… - Journal of Statistical …, 2019 - iopscience.iop.org
By employing a path integral formulation, we obtain the entropy production rate for a system
of active Ornstein–Uhlenbeck particles (AOUP) both in the presence and in the absence of …

[HTML][HTML] The parental active model: A unifying stochastic description of self-propulsion

L Caprini, AR Sprenger, H Löwen… - The Journal of Chemical …, 2022 - pubs.aip.org
We propose a new overarching model for self-propelled particles that flexibly generates a
full family of “descendants.” The general dynamics introduced in this paper, which we …

Activated escape of a self-propelled particle from a metastable state

E Woillez, Y Zhao, Y Kafri, V Lecomte, J Tailleur - Physical review letters, 2019 - APS
We study the noise-driven escape of active Brownian particles (ABPs) and run-and-tumble
particles (RTPs) from confining potentials. In the small noise limit, we provide an exact …

Spatial velocity correlations in inertial systems of active Brownian particles

L Caprini, UMB Marconi - Soft Matter, 2021 - pubs.rsc.org
Recently, it has been discovered that systems of active Brownian particles (APB) at high
density organise their velocities into coherent domains showing large spatial structures in …

Escape dynamics of active particles in multistable potentials

A Militaru, M Innerbichler, M Frimmer… - Nature …, 2021 - nature.com
Rare transitions between long-lived metastable states underlie a great variety of physical,
chemical and biological processes. Our quantitative understanding of reactive mechanisms …