From the holomorphic Wilson loop to ‘d log’ loop-integrands of super-Yang-Mills amplitudes
From the holomorphic Wilson loop to ‘d log’ loop-integrands of super-Yang-Mills amplitudes
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从全纯 Wilson 环到超杨米尔斯振幅的“d log”环被积函数
DOI:
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
L. Mason
中科院分区:
文献类型:
--
作者:
A. Lipstein;L. Mason
A bstractThe S-matrix for planar $ \mathcal{N} $ = 4 super Yang-Mills theory can be computed as the correlation function for a holomorphic polygonal Wilson loop in twistor space. In an axial gauge, this leads to the construction of the all-loop integrand via MHV diagrams in twistor space. We show that at MHV, this formulation leads directly to expressions for loop integrands in d log form; i.e., the integrand is a product of exterior derivatives of logarithms of rational functions. For higher MHV degree, it is in d log form multiplied by delta functions. The parameters appearing in the d log form arise geometrically as the coordinates of insertion points of propagators on the holomorphic Wilson loop or on MHV vertices. We discuss a number of examples at one and two loops and give a preliminary discussion of the evaluation of the 1-loop MHV amplitude.
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影响因子:
5.4
作者:
L. Mason;David Skinner
通讯作者:
L. Mason;David Skinner
影响因子:
5.4
作者:
L. Mason;David Skinner
通讯作者:
L. Mason;David Skinner
影响因子:
5.4
作者:
L. Mason;David Skinner
通讯作者:
L. Mason;David Skinner
影响因子:
5.4
作者:
J. Drummond;J. Henn;J. Plefka
通讯作者:
J. Drummond;J. Henn;J. Plefka
影响因子:
5.4
作者:
Adamo T
通讯作者:
Adamo T