Unparticle actions and gauge invariance
Abstract
Description
We show that the requirement of gauge invariance is not enough to fix the form of interactions between unparticles and gauge fields, thus revealing a wide new class of gauged unparticle actions. Our approach also allows us to construct operators which create gauge invariant coloured unparticles. We discuss both their perturbative and non--perturbative properties.
15 pages. V2: references added. Version to appear in PRD
15 pages. V2: references added. Version to appear in PRD