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キーワード:
Author Keywords: reaction-diffusion systems; pattern formation; Eckhaus instability; wave dispersion; KeyWords Plus: REACTION-DIFFUSION SYSTEMS; TARGET PATTERNS; TRAVELING WAVES; SPIRAL WAVES; INSTABILITY; MODEL; PROPAGATION; TURBULENCE; BREAKUP; MEDIA
要旨:
We investigate pattern formation in oscillatory reaction-diffusion systems where wave sources and sinks are created by a local shift of the oscillation frequency. General properties of resulting wave patterns in media with positive and negative dispersion are discussed. It is shown that phase slips in the wave patterns develop for strong frequency shifts, indicating the onset of desynchronization in the medium.