Yang-Mills instantons vs. type IIB D-instantons
| dc.creator | Bianchi, Massimo | |
| dc.creator | Kovacs, Stefano | |
| dc.date | 1998-11-06 | |
| dc.date | 1998-11-27 | |
| dc.date.accessioned | 2026-07-07T04:25:30Z | |
| dc.date.available | 2026-07-07T04:25:30Z | |
| dc.description | We report on the computation of the one-instanton contribution to the 16-point Green function of fermionic composite operators in N=4 Super YM theory. The remarkable agreement, initially found in the case of an SU(2) gauge group, with the one D-instanton contribution to the corresponding type IIB superstring amplitude on $AdS_5\times S^5$ is reviewed here. The recent extension by other authors of this result to any SU(N) gauge group and to multi-instantons in the large N limit is briefly discussed. We also argue that for the AdS/SCFT correspondence under consideration to work for any $N\geq 2$, at least for some protected interactions, string effects should require a truncation of the Kaluza--Klein spectrum for finite $S^5$ radius much in the same way as worldsheet unitarity restricts the allowed isospins in SU(2) WZW models. Finally, we briefly comment on the logarithmic behavior of some four-point Green functions of scalar composite operators. | |
| dc.description | 20 pages, Latex, added references, Talk presented at the RFBR-INTAS School on ``Advances in Quantum Field Theory, Statistical Mechanics and Dynamical Systems'', Landau Network at Centro A. Volta, Villa Olmo, Como, Italy, September 7-20 1998, to appear in the proceedings | |
| dc.identifier | https://arxiv.org/abs/hep-th/9811060 | |
| dc.identifier | http://arxiv.org/abs/hep-th/9811060 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/55771 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Yang-Mills instantons vs. type IIB D-instantons | |
| dc.type | text |