For a large class of nonequilibrium systems, thermodynamic notions like work, heat, and, in
particular, entropy production can be identified on the level of fluctuating dynamical …

Active systems are driven out of equilibrium by exchanging energy and momentum with their
environment. This endows them with anomalous mechanical properties that are reviewed in …

Entropy production of an active particle in an external potential is identified through a
thermodynamically consistent minimal lattice model that includes the chemical reaction …

When do nonequilibrium forms of disordered energy qualify as heat? We address this
question in the context of cyclically operating heat engines feeding on nonequilibrium …

We investigate a model for a Stirling-like engine consisting of a passive Brownian particle
confined by a harmonic potential and interacting with a suspension of active Brownian …

There is a variety of cases in nature when the action–reaction symmetry is broken. In
particular, suitable conditions for this are realized in colloidal suspensions and complex …

Active fluids operate by constantly dissipating energy at the particle level to perform a
directed motion, yielding dynamics and phases without any equilibrium equivalent. The …

An active bath, made of self-propelling units, is a nonequilibrium medium in which the
Einstein relation D= μk BT between the mobility μ and the diffusivity D of a tracer particle …

The interactions of autonomous microswimmers play an important role for the formation of
collective states of motile active matter. We study them in detail for the common …

We study a passive probe immersed in a fluid of active particles. Despite the system's non-
equilibrium nature, the trajectory of the probe does not exhibit non-equilibrium signatures: its …