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arXiv 1011.2673hep-th
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BFKL方法和N=4超杨米尔斯中的六粒子MHV振幅

BFKL approach and six-particle MHV amplitude in N=4 super Yang-Mills

L. N. Lipatov, A. Prygarin

摘要:

本文研究了N=4超对称Yang-Mills理论中2 -> 4粒子在Regge运动学中两圈和三圈处散射的平面MHV振幅。本文将Goncharov,Spradlin,Vergu和Volovich的余项函数的两圈结果解析地推广到在Regge极限下余项函数不为零的物理区域.在延拓之后,提取并分析了能量项的对数中的前导项和子前导项。使用这个结果,我们计算的下一个领先的修正BFKL方法中所需的影响因子。使用BFKL技术在三个循环处找到余项函数的前导虚部和实部。

英文摘要:

We consider the planar MHV amplitude in N=4 supersymmetric Yang-Mills theory for 2 -> 4 particle scattering at two and three loops in the Regge kinematics. We perform an analytic continuation of two-loop result for the remainder function found by Goncharov, Spradlin, Vergu and Volovich to the physical region, where the remainder function does not vanish in the Regge limit. After the continuation both the leading and the subleading in the logarithm of the energy terms are extracted and analyzed. Using this result we calculate the next-to-leading corrections to the impact factors required in the BFKL approach. The BFKL technique was used to find the leading imaginary and real parts of the remainder function at three loops.

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