Abstract
Existing works on coherence resonance, i.e., the phenomenon of noise-enhanced temporal regularity, focus on excitable dynamical systems such as those described by the FitzHugh-Nagumo equations. We extend the scope of coherence resonance to an important class of dynamical systems: coupled chaotic oscillators. In particular, we show that, when a system of coupled chaotic oscillators is under the influence of noise, the degree of temporal regularity of dynamical variables characterizing the difference among the oscillators can increase and reach a maximum value at some optimal noise level. We present numerical results illustrating the phenomenon and give a physical theory to explain it.
Original language | English |
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Pages (from-to) | 4737-4740 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 86 |
Issue number | 21 |
DOIs | |
Publication status | Published - 21 May 2001 |
Keywords
- on-off intermittency
- stochastic resonance
- excitable systems
- phase synchronization
- persistent currents
- blowout bifurcation
- noise
- basins
- rings