Can a traveling wave connect two unstable states? The case of the nonlocal Fisher equation

نویسندگان

  • Grégoire Nadin
  • Benôıt Perthame
  • Min Tang
چکیده

This note investigates the properties of the traveling waves solutions of the nonlocal Fisher equation. The existence of such solutions has been proved recently in [2] but their asymptotic behavior was still unclear. We use here a new numerical approximation of these traveling waves which shows that some traveling waves connect the two homogeneous steady states 0 and 1, which is a striking fact since 0 is dynamically unstable and 1 is unstable in the sense of Turing. Key-words Nonlocal Fisher equation, Turing instability, traveling waves. AMS Subject Classification: 35B36, 92B05, 37M99.

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تاریخ انتشار 2017