Propagation acceleration in reaction diffusion equations with anomalous diffusions
نویسندگان
چکیده
In this paper we consider the propagation speed in a reaction diffusion system with an anomalous Lévy process diffusion, modeled by nonlocal equation fractional Laplacian and generalized monostable or ignition nonlinearity. Given typical Heaviside initial datum, show that of interface displays algebraic rate behavior time, contrast to known linear classical model Brownian motion exponential KPP depends on sensitive balance between anomaly strength reaction. particular, for combustion (??)s, transits continuously from being when traveling wave solution exists s ? (1/2, 1), time power reciprocal 2s, no (0, 1/2).
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ژورنال
عنوان ژورنال: Nonlinearity
سال: 2021
ISSN: ['0951-7715', '1361-6544']
DOI: https://doi.org/10.1088/1361-6544/abe17c