• P K Roy

      Articles written in Pramana – Journal of Physics

    • Chimera states in a population of identical oscillators under planar cross-coupling

      C R Hens A Mishra P K Roy A Sen S K Dana

      More Details Abstract Fulltext PDF

      We report the existence of chimera states in an assembly of identical nonlinear oscillators that are globally linked to each other in a simple planar cross-coupled form. The rotational symmetry breaking of the coupling term appears to be responsible for the emergence of these collective states that display a characteristic coexistence of coherent and incoherent behaviour. The finding, observed in both a collection of van der Pol oscillators and chaotic Rössler oscillators, further simplifies the existence criterion for chimeras, thereby broadens the range of their applicability to real-world situations.

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