Solitary waves in a nonintegrable Fermi-Pasta-Ulam chain.
We present a family of exact solutions describing discrete solitary waves in a nonintegrable Fermi-Pasta-Ulam chain. The family is sufficiently rich to cover the whole spectrum of known behaviors from delocalized quasicontinuum waves moving with near-sonic velocities to highly localized anticontinuum excitations with only one particle moving at a time.
LMS, CNRS-UMR 7649, École Polytechnique, Route de Saclay, 91128 Palaiseau, France.
Lev
L
Truskinovsky
Department of Mathematics, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
Anna
A
Vainchtein
D008962:Models, Theoretical; D009038:Motion