| dc.creator | Franco, D. H. T. | |
| dc.creator | Cima, O. M. Del | |
| dc.creator | Piguet, O. | |
| dc.creator | Schweda, M. | |
| dc.date | 2018-10-04T18:13:02Z | |
| dc.date | 2018-10-04T18:13:02Z | |
| dc.date | 2009-09-14 | |
| dc.date.accessioned | 2023-09-27T20:36:29Z | |
| dc.date.available | 2023-09-27T20:36:29Z | |
| dc.identifier | 03702693 | |
| dc.identifier | https://doi.org/10.1016/j.physletb.2009.08.018 | |
| dc.identifier | http://www.locus.ufv.br/handle/123456789/22148 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8944796 | |
| dc.description | In this Letter we call into question the perturbatively parity breakdown at 1-loop for the massless QED3 frequently claimed in the literature. As long as perturbative quantum field theory is concerned, whether a parity anomaly owing to radiative corrections exists or not shall be definitely proved by using a renormalization method independent of any regularization scheme. Such a problem has been investigated in the framework of BPHZL renormalization method, by adopting the Lowenstein–Zimmermann subtraction scheme. The 1-loop parity-odd contribution to the vacuum-polarization tensor is explicitly computed in the framework of the BPHZL renormalization method. It is shown that a Chern–Simons term is generated at that order induced through the infrared subtractions — which violate parity. We show then that, what is called “parity anomaly”, is in fact a parity-odd counterterm needed for restauring parity. | |
| dc.format | pdf | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | Physics Letters B | |
| dc.relation | v. 680, n. 1, p. 108- 110, set. 2009 | |
| dc.rights | Elsevier B.V. | |
| dc.subject | QED3 | |
| dc.subject | BPHZL | |
| dc.title | No parity anomaly in massless QED3 : a BPHZL approach | |
| dc.type | Artigo | |
