title: Symmetric Potential Lattice and Smooth Propagation of Tail-Free Discrete Breathers.
abstract: We present a particular type of one-dimensional nonlinear lattice that supports smoothly propagating discrete breathers. The lattice is constructed by imposing a particular symmetry on its potential function. This symmetry crucially affects the profile and motion of a traveling discrete breather. We show that any traveling discrete breather is truly localized with no tail and can smoothly propagate with a constant velocity. Theoretical analysis using an average Lagrangian explains this numerical observation.
authors.affiliation: Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Doi
authors.affiliation: NTT Communication Science Laboratories, NTT Corporation 3-1 Morinosato, Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Yoshimura