A note on unparticle in lower dimensions

Abstract

Using the gauge-invariant but path-dependent variables formalism, we examine the effect of the space-time dimensionality on a physical observable in the unparticle scenario. We explicitly show that long-range forces between particles mediated by unparticles are still present whenever we go over into lower dimensions.

Comments: 9 pages, latex, no figures; misprints corrected; notation improved; inserted comments about: divergent KK modes; d_U-->1 limit in 1+1 Dim.; Sommerfield model. Version accepted for publication in PLB