Asymptotic formulas for solitary waves in the high-energy limit of FPU-type chains

Author: Herrmann Michael   Matthies Karsten  

Publisher: IOP Publishing

E-ISSN: 1361-6544|28|8|2767-2789

ISSN: 0951-7715

Source: Nonlinearity, Vol.28, Iss.8, 2015-08, pp. : 2767-2789

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

It is well established that the solitary waves of FPU-type chains converge in the high-energy limit to traveling waves of the hard-sphere model. In this paper we establish improved asymptotic expressions for the wave profiles as well as an explicit formula for the wave speed. The key step in our approach is the derivation of an asymptotic ODE for the appropriately rescaled strain profile.