关于低x演化核的差异性
On the discrepancy of the low-x evolution kernels
摘要:
它表明,在前向散射的情况下,BFKL核的莫比乌斯形式和BK核的次领先阶(NLO)之间的差异的大部分可以通过与散射振幅的表示中的能量尺度的选择相关的变换来消除。在此变换下,非前向BFKL核的变化也被导出。给出了前向BFKL核在首阶动量表象和莫比乌斯表象中的函数恒等式,并证明了它在N=4超对称Yang-Mills理论中的非线性光学有效性.
英文摘要:
It is shown that in the case of the forward scattering the most part of the difference between the Möbius form of the BFKL kernel and the BK kernel in the next-to-leading order (NLO) can be eliminated by the transformation related to the choice of the energy scale in the representation of scattering amplitudes. Change of the nonforward BFKL kernel under this transformation is derived as well. The functional identity of the forward BFKL kernel in the momentum and Möbius representations in the leading order (LO) is exhibited and its NLO validity in N=4 supersymmetric Yang-Mills theory is proved.
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