We review the depinning and nonequilibrium phases of collectively interacting particle
systems driven over random or periodic substrates. This type of system is relevant to vortices …

When an amorphous solid is deformed cyclically, it may reach a steady state in which the
paths of constituent particles trace out closed loops that repeat in each driving cycle. A …

We study a periodic medium driven over a random or periodic substrate, characterizing the
nonequilibrium phases which occur by dynamic order parameters and their correlations …

Depinning and nonequilibrium transitions within sliding states in systems driven over
quenched disorder arise across a wide spectrum of size scales ranging from atomic friction …

Understanding self-organization is one of the key tasks for controlling and manipulating the
structure of materials at the micro-and nanoscale. In general, self-organization is driven by …

We establish the complete phase diagram of self-propelled hard disks in two spatial
dimensions from the analysis of the equation of state and the statistics of local order …

We formulate the statistical dynamics of topological defects in the active nematic phase,
formed in two dimensions by a collection of self-driven particles on a substrate. An important …

We provide evidence that a reversible to irreversible flow transition (RIT), as reported in
driven colloidal particles, occurs in periodically sheared vortices in a Corbino-disk …

As a step toward isolating the influence of a modulated substrate potential on dynamics and
phase transitions in two dimensions, we have studied the behavior of a monolayer of …

Self-organization, and transitions from reversible to irreversible behavior, of interacting
particle assemblies driven by externally imposed stresses or deformation is of interest in …