Energy properties of discrete breathers

Discrete breathers lire time-periodic, spatially localized solutions of equations of motion for classical degrees of freedom interacting on a lattice. They come in one-parameter families. We use recent results of Flach et al. (1997) on d-dimensional systems with local interaction and recent results of Gaididei et al. (1997) on one-dimensional systems with nonlocal interaction. We discuss energy properties of breathers in d-dimensional lattices with nonlocal interactions. Copyright (C) 1998 Elsevier Science B.V.