High Energy Physics - Theory
[Submitted on 22 Apr 2010
(v1)
, last revised 21 Nov 2010 (this version, v3)]
Title: Scattering amplitudes at strong coupling for 4K gluons
Title: 强耦合下4K胶子的散射振幅
Abstract: In this paper we study the scattering amplitudes at strong coupling for the case where the number of gluons is a multiple of four. This is an important missing piece in arXiv:1002.2459. The tricky point for n=4K is that there is some accidental degeneracy in such case. We explain this point in detail and show that a non-trivial monodromy around infinity was developed by the world-sheet coordinate transformation appearing in the computation. It turns out that besides solving the Y system, we also need to calculate T functions to compute the full amplitudes. We show that the T functions can be derived by taking a limit of Y functions of a higher-point case. As a check, we obtain the known result of eight-point in AdS_3 case.
Submission history
From: Gang Yang [view email][v1] Thu, 22 Apr 2010 18:56:27 UTC (127 KB)
[v2] Wed, 16 Jun 2010 19:34:21 UTC (130 KB)
[v3] Sun, 21 Nov 2010 18:59:24 UTC (129 KB)
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