2-dimensional Regge gravity in the conformal gauge

By restricting the functional integration to the Regge geometries, we give the discretized version of the well known path integral formulation of 2–dimensional quantum gravity in the conformal gauge. We analyze the role played by diffeomorphisms in the Regge framework and we give an exact expression for the Faddeev–Popov determinant related to a Regge surface; such an expression in the smooth limit goes over to the correct continuum result.