Manzoni, L. A. [UNESP]Pimentel, B. M. [UNESP]Tomazelli, J. L. [UNESP]2014-05-272014-05-272000-12-01European Physical Journal C, v. 12, n. 4, p. 701-705, 2000.1434-6044http://hdl.handle.net/11449/66295We evaluate the one-loop fermion self-energy for the gauged Thirring model in (2+1) dimensions. with one massive fermion flavor. We do this in the framework of the causal perturbation theory. In contrast to QED3, the corresponding two-point function turns out to be infrared finite on the mass shell. Then, by means of a Ward identity, we derive the on-shell vertex correction and discuss the role played by causality for non-renormalizable theories.701-705engArtigo10.1007/s100520000276WOS:000086148700012Acesso restrito2-s2.0-0039594611