A new type of intermittent behavior is described to occur near the boundaryof phase synchronization regime of coupled chaotic oscillators. This mechanism,called ring intermittency, arises for sufficiently high initial mismatches inthe frequencies of the two coupled systems. The laws for both the distributionand the mean length of the laminar phases versus the coupling strength areanalytically deduced. A very good agreement between the theoretical results andthe numerically calculated data is shown. We discuss how this mechanism isexpected to take place in other relevant physical circumstances.
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