Comment on the Alday-Maldacena solution in calculating scattering amplitude via AdS/CFT
High Energy Physics - Theory
2008-11-26 v3
Abstract
Following the recent proposal of Alday and Maldacena to obtain the strong coupling scattering amplitude in N=4 SYM via AdS/CFT, we point out that a unique solution can be obtained by imposing all the Virasoro constraints. In the case of four-gluon scattering, this solution is identical to the Alday-Maldacena solution, which is in accordance with the ansatz of Bern, Dixon and Smirnov. This also solves the moduli space problem of the four-point solution in a recent paper of Mironov, Morozov and Tomaras.
Cite
@article{arxiv.0711.2828,
title = {Comment on the Alday-Maldacena solution in calculating scattering amplitude via AdS/CFT},
author = {Gang Yang},
journal= {arXiv preprint arXiv:0711.2828},
year = {2008}
}
Comments
8 pages, no figures; v2: refined analysis on a general choice of k-vectors, see eq.(19); v3: presentation is improved, a mistake (eq.(31) in v2) is corrected, to be published in JHEP