title: Anomalous heat conduction in a one-dimensional ideal gas.
abstract: We provide firm convincing evidence that the energy transport in a one-dimensional gas of elastically colliding free particles of unequal masses is anomalous, i.e., the Fourier law does not hold. Our conclusions are confirmed by a theoretical and numerical analysis based on a Green-Kubo-type approach specialized to momentum-conserving lattices.
authors.affiliation: International Center for the Study of Dynamical Systems, Università degli Studi dell'Insubria, Como, Italy.
authors.forename: Giulio
authors.initials: G
authors.lastname: Casati
authors.forename: Tomaz
authors.initials: T
authors.lastname: Prosen