title: Chimera states on the surface of a sphere.
abstract: A chimera state is a spatiotemporal pattern in which a network of identical coupled oscillators exhibits coexisting regions of asynchronous and synchronous oscillation. Two distinct classes of chimera states have been shown to exist: "spots" and "spirals." Here we study coupled oscillators on the surface of a sphere, a single system in which both spot and spiral chimera states appear. We present an analysis of the birth and death of spiral chimera states and show that although they coexist with spot chimeras, they are stable in disjoint regions of parameter space.
authors.affiliation: Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois 60208, USA.|Mathematics Department, Rose-Hulman Institute of Technology, Terre Haute, Indiana 47803, USA.
authors.forename: Mark J
authors.initials: MJ
authors.lastname: Panaggio
authors.affiliation: Department of Engineering Sciences and Applied Mathematics, Northwestern University, Evanston, Illinois 60208, USA.|Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA.|Northwestern Institute on Complex Systems, Northwestern University, Evanston, Illinois 60208, USA.
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Abrams