  We show that dynamical clustering, where a system segregates into
distinguishable subsets of synchronized elements, and chimera states, where
differentiated subsets of synchronized and desynchronized elements coexist, can
emerge in networks of globally coupled robust-chaos oscillators. We describe
the collective behavior of a model of globally coupled robust-chaos maps in
terms of statistical quantities, and characterize clusters, chimera states,
synchronization, and incoherence on the space of parameters of the system. We
employ the analogy between the local dynamics of a system of globally coupled
maps with the response dynamics of a single driven map. We interpret the
occurrence of clusters and chimeras in a globally coupled system of
robust-chaos maps in terms of windows of periodicity and multistability induced
by a drive on the local robust-chaos map. Our results show that robust-chaos
dynamics does not limit the formation of cluster and chimera states in networks
of coupled systems, as it had been previously conjectured.
