Excitability transitions and wave dynamics under spatiotemporal structured noise.
Excitability transitions and wave dynamics under spatiotemporal structured noise.
复制标题
时空结构噪声下的兴奋性转变和波动力学。
DOI:
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发表时间:
2002
期刊:
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通讯作者:
José M. Sancho
中科院分区:
文献类型:
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作者:
Sergio Alonso;Francesc Sagués;José M. Sancho
We present an analytic and numerical study of the effects of external fluctuations in active media. Our analytical methodology transforms the initial stochastic partial differential equations into an effective set of deterministic reaction-diffusion equations. As a result we are able to explain and make quantitative predictions on the systematic and constructive effects of the noise, for example, target patterns created out of noise and traveling or spiral waves sustained by noise. Our study includes the case of realistic noises with temporal and spatial structures.