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arXiv 1104.5224hep-thhep-ph
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纯旋量的显式BCJ分子

Explicit BCJ Numerators from Pure Spinors

Carlos R. Mafra, Oliver Schlotterer, Stephan Stieberger

摘要:

我们推导出局部运动分子的规范理论树振幅显然满足雅可比恒等式类似的颜色因素。它们自然地出现在用纯旋量形式主义计算的超弦振幅的低能量极限中。色-运动学对偶性的表现是涉及不超过(n-2)的超弦计算的结果!全色修饰的n点振幅的运动学因子。这些结果的玻色子部分描述了胶子散射与超对称性的数量无关,并在降维到D=4维后捕获了任何N^kMHV螺旋度构型。

英文摘要:

We derive local kinematic numerators for gauge theory tree amplitudes which manifestly satisfy Jacobi identities analogous to color factors. They naturally emerge from the low energy limit of superstring amplitudes computed with the pure spinor formalism. The manifestation of the color--kinematics duality is a consequence of the superstring computation involving no more than (n-2)! kinematic factors for the full color dressed n-point amplitude. The bosonic part of these results describe gluon scattering independent on the number of supersymmetries and captures any N^kMHV helicity configuration after dimensional reduction to D=4 dimensions.

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