par Barnich, Glenn 
;Henneaux, Marc ;Hurth, Tobias;Skenderis, Kostas
Référence Physics Letters B, 492, 3, page (376-384)
Publication Publié, 1999-10
;Henneaux, Marc ;Hurth, Tobias;Skenderis, KostasRéférence Physics Letters B, 492, 3, page (376-384)
Publication Publié, 1999-10
Article révisé par les pairs
| Résumé : | The relation between the gauge-invariant local BRST cohomology involving the antifields and the gauge-fixed BRST cohomology is clarified. It is shown in particular that the cocycle conditions become equivalent once it is imposed, on the gauge-fixed side, that the BRST cocycles should yield deformations that preserve the nilpotency of the (gauge-fixed) BRST differential. This shows that the restrictions imposed on local counterterms by the quantum Noether condition in the Epstein-Glaser construction of gauge theories are equivalent to the restrictions imposed by BRST invariance on local counterterms in the standard Lagrangian approach. (C) 2000 Elsevier Science B.V. |
