We review the general aspects of the concept of temperature in equilibrium and non-
equilibrium statistical mechanics. Although temperature is an old and well-established …

We investigate the non-equilibrium character of self-propelled particles through the study of
the linear response of the active Ornstein–Uhlenbeck particle (AOUP) model. We express …

We study the mobility and the diffusion coefficient of an inertial tracer advected by a two-
dimensional incompressible laminar flow, in the presence of thermal noise and under the …

We review generalized fluctuation-dissipation relations, which are valid under general
conditions even in “nonstandard systems,” eg, out of equilibrium and/or without a …

This brief offers a concise presentation of granular fluids from the point of view of non-
equilibrium statistical physics. The emphasis is on fluctuations, which can be large in …

A vertically shaken granular medium hosts a blade rotating around a fixed vertical axis,
which acts as a mesorheological probe. At high densities, independently of the shaking …

In an active bath, besides thermal noise, immersed passive objects also persistently
experience collisions from active particles, which are often coarse-grained into a colored …

Using particle trajectory data obtained from x-ray tomography, we determine two kinds of
effective temperatures in a cyclically sheared granular system. The first one is obtained from …

We derive generalized fluctuation–dissipation relations (FDR) holding for a general
stochastic dynamics that includes as subcases both equilibrium models for passive colloids …

We study analytically the dynamics and the microstructural changes of a host medium
caused by a driven tracer particle moving in a confined, quiescent molecular crowding …