title: Propagation of discrete solitons in inhomogeneous networks.
abstract: In many physical applications solitons propagate on supports whose topological properties may induce new and interesting effects. In this paper, we investigate the propagation of solitons on chains with a topological inhomogeneity generated by inserting a finite discrete network on a chain. For networks connected by a link to a single site of the chain, we derive a general criterion yielding the momenta for perfect reflection and transmission of traveling solitons and we discuss solitonic motion on chains with topological inhomogeneities.
authors.affiliation: I.N.F.M. and Dipartimento di Fisica, Università di Parma, parco Area delle Scienze 7A Parma, I-43100, Italy.
authors.forename: R
authors.initials: R
authors.lastname: Burioni
authors.forename: D
authors.initials: D
authors.lastname: Cassi
authors.forename: P
authors.initials: P
authors.lastname: Sodano
authors.forename: A
authors.initials: A
authors.lastname: Trombettoni
authors.forename: A
authors.initials: A
authors.lastname: Vezzani