Active matter physics is about systems in which energy is dissipated at some local level to
produce work. This is a generic situation, particularly in the living world but not only. What is …

Oscillatory behavior is ubiquitous in out-of-equilibrium systems showing spatiotemporal
pattern formation. Starting from a linear large-scale oscillatory instability—a conserved-Hopf …

We study active Brownian particles as a paradigm for a genuine nonequilibrium phase
transition requiring steady driving. Access to the critical point in computer simulations is …

We briefly review the facts concerning two important aspects of phase transitions, namely,
critical and coarsening phenomena. A discussion of the universal features, highlighting the …

Collections of fire ants are a form of active matter, as the ants use their internal metabolism
to self-propel. In the absence of aligning interactions, theory and simulations predict that …

We study the role of noise on the nature of the transition to collective motion in dry active
matter. Starting from field theories that predict a continuous transition at the deterministic …

Off-lattice active Brownian particles form clusters and undergo phase separation even in the
absence of attractions or velocity-alignment mechanisms. Arguments that explain this …

We study the effect of spatial anisotropy on polar flocks by investigating active q-state clock
models in two dimensions. In contrast to the equilibrium case, we find that any amount of …

We consider the two-species Vicsek model (TSVM) consisting of two kinds of self-propelled
particles, A and B, that tend to align with particles from the same species and to antialign …

Starting at the mesoscopic level with a general formulation of stochastic thermodynamics in
terms of Markov jump processes, we identify the scaling conditions that ensure the …