  We show that amplitude-mediated phase chimeras and amplitude chimeras can
occur in the same network of nonlocally coupled identical oscillators. These
are two different partial synchronization patterns, where spatially coherent
domains coexist with incoherent domains and coherence/incoherence refer to both
amplitude and phase or only the amplitude of the oscillators, respectively. By
changing the coupling strength the two types of chimera patterns can be
induced. We find numerically that the amplitude chimeras are not short-living
transients but can have a long lifetime. Also, we observe variants of the
amplitude chimeras with quasiperiodic temporal oscillations. We provide a
qualitative explanation of the observed phenomena in the light of symmetry
breaking bifurcation scenarios. We believe that this study will shed light on
the connection between two disparate chimera states having different
symmetry-breaking properties.
