title: Particle scattering in loop quantum gravity.
abstract: We devise a technique for defining and computing -point functions in the context of a background-independent gravitational quantum field theory. We construct a tentative implementation of this technique in a perturbatively finite model defined using spin foam techniques in the context of loop quantum gravity.
authors.affiliation: Centre de Physique Théorique de Luminy, Université de la Méditerranée, F-13288 Marseille, Cedex 09, France.
authors.forename: Leonardo
authors.initials: L
authors.lastname: Modesto
authors.forename: Carlo
authors.initials: C
authors.lastname: Rovelli