title: Shape profile of compactlike discrete breathers in nonlinear dispersive lattice systems.
abstract: We study the spatial decay profile of compactlike discrete breathers in nonlinear dispersive lattices. We show that the core region of such nonlinear localized excitations can be described by a cosinelike spatial shape while the tail region decays with a faster than exponential law, such as a superexponential one. We discuss the relation of the tail decay to properties of space-time separability.
authors.affiliation: Department of Physics, University of Crete and FORTH, P. O. Box 2208, 71003 Heraklion, Crete, Greece.
authors.forename: B
authors.initials: B
authors.lastname: Dey
authors.forename: M
authors.initials: M
authors.lastname: Eleftheriou
authors.forename: S
authors.initials: S
authors.lastname: Flach
authors.forename: G P
authors.initials: GP
authors.lastname: Tsironis