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Explicit BCJ numerators of nonlinear simga model
Journal of High Energy Physics ( IF 5.4 ) Pub Date : 2016-09-01 , DOI: 10.1007/jhep09(2016)174
Yi-Jian Du , Chih-Hao Fu

A bstractIn this paper, we investigate the color-kinematics duality in nonlinear sigma model (NLSM). We present explicit polynomial expressions for the kinematic numerators (BCJ numerators). The calculation is done separately in two parametrization schemes of the theory using Kawai-Lewellen-Tye relation inspired technique, both lead to polynomial numerators. We summarize the calculation in each case into a set of rules that generates BCJ numerators for all multilplicities. In Cayley parametrization we find the numerator is described by a particularly simple formula solely in terms of momentum kernel.

中文翻译:

非线性 simga 模型的显式 BCJ 分子

摘要在本文中,我们研究了非线性西格玛模型 (NLSM) 中的颜色运动学对偶性。我们给出了运动学分子(BCJ 分子)的显式多项式表达式。使用 Kawai-Lewellen-Tye 关系启发技术在理论的两个参数化方案中分别进行计算,两者都导致多项式分子。我们将每种情况下的计算总结为一组规则,为所有多重性生成 BCJ 分子。在 Cayley 参数化中,我们发现分子由一个特别简单的公式描述,仅根据动量核。
更新日期:2016-09-01
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