Regge behavior of gluon scattering amplitudes in N=4 SYM theory

被引:33
|
作者
Naculich, Stephen G. [1 ]
Schnitzer, Howard J. [2 ]
机构
[1] Bowdoin Coll, Dept Phys, Brunswick, ME 04011 USA
[2] Brandeis Univ, Martin Fisher Sch Phys, Theoret Phys Grp, Waltham, MA 02454 USA
基金
美国国家科学基金会;
关键词
D O I
10.1016/j.nuclphysb.2007.10.026
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
It is shown that the four-gluon scattering amplitude for N = 4 supersymmetric Yang-Mills theory in the planar limit can be written, in both the weak- and strong-coupling limits, as a reggeized amplitude, with a parent trajectory and an infinite number of daughter trajectories. This result is not evident a priori, and relies crucially on the fact that the leading IR-divergence and the finite log(2)(s/t)-dependent piece of the amplitude are characterized by the same function for all values of the coupling, as conjectured by Bern, Dixon, and Smimov, and proved by Alday and Maldacena in the strong-coupling limit. We use the Alday-Maldacena result to determine the exact strong-coupling Regge trajectory. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:189 / 194
页数:6
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