Plateforme d'Enseignement à Distance de l'Université Oran 1 Ahmed Ben Bella
مدونة الموقع
أي شخص على هذا الموقع
With M. Tahiri.
Abstract : We develop a method to derive the on-shell invariant quantum action of the simple supergravity in such a way that the quartic ghost interactions term is explicity determined. First, we reinvestigate the simple supergravity in terms of a principal superfiber bundle. This gives rise to the closed geometrical BRST algebra. Therefore we determine the open BRST algebra, which realizes the invariance of the classical action. Then, given a prescription to build the full quantum action, we obtain the quantum BRST algebra. Together with the constructed quantum action this allows us to recover the auxiliary fields and the invariant extension of the classical action.
REF. : Modern Physics Letter A 15 (2000)
Abstract : We develop a method to derive the on-shell invariant quantum action of the simple supergravity in such a way that the quartic ghost interactions term is explicity determined. First, we reinvestigate the simple supergravity in terms of a principal superfiber bundle. This gives rise to the closed geometrical BRST algebra. Therefore we determine the open BRST algebra, which realizes the invariance of the classical action. Then, given a prescription to build the full quantum action, we obtain the quantum BRST algebra. Together with the constructed quantum action this allows us to recover the auxiliary fields and the invariant extension of the classical action.
[ تم التعديل: الجمعة، 31 أكتوبر 2014، 10:52 PM ]
أي شخص بالعالم
La synthèse de quelques Δ2-1,2,3-triazolines 1,4,5-trisubstituées bicycliques effectuée par réaction multicomposés associant la cyclohexanone, une amine secondaire cyclique et divers nitrophénylazides, à température ambiante dans l’éther ou sans solvant, a conduit aux triazolines escomptées avec des rendements qui varient en fonction de la structure des azides et de l’amine utilisée. La structure des hétérocycles pentagonaux triazotés obtenus a été déterminée grâce aux méthodes spectroscopiques (IR, RMN 1H, RMN 13C).
Mots clés : Réaction multicomposés, Amines, Cyclohexanone, Azides, Triazolines, Activité biologique.
[ تم التعديل: السبت، 9 مايو 2020، 3:11 PM ]