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arXiv 2211.04431hep-th
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对称结构双拷贝的优点

Virtues of a symmetric-structure double copy

John Joseph M. Carrasco, Nicolas H. Pavao

AI总结:

本研究将BCJ双拷贝构造拓展至对称结构常数对应的色对偶情形,验证了U(Nc)非线性σ模型π介子的对称色对偶性,可覆盖所有四点有效光子算符,并探讨了其对引力有效算符构造的意义。

摘要:

我们论证了将色对偶(即BCJ双拷贝构造)拓展至包含运动学分子的理论的物理动机,这类运动学分子满足与对称结构常数$d^{abc}=\text{Tr}[\{T^{a},T^{b}\}T^c]$相同的代数关系。我们验证了$U(N_c)$非线性σ模型(NLSM)的π介子——长期以来人们已知其在反对称伴随因子$f^{abc}$下具有色对偶性——在对称色结构$d^{abc}$意义下同样具有色对偶性,且通过六点散射过程明确验证了这一点。这种对NLSMπ介子振幅的重新阐释,补充了我们对$d^{abc}$色对偶高阶导数规范算符的构造性构建。借助伴随与对称色对偶运动学,我们可通过利用物理理论振幅的双拷贝构造,覆盖所有四点有效光子算符。我们还进一步讨论了定域性与伴随有效分子之间的矛盾,以及这对利用非伴随运动学构造引力有效算符的影响。

英文摘要:

We demonstrate a physical motivation for extending color-dual or BCJ double-copy construction to include theories with kinematic numerators that obey the same algebraic relations as symmetric structure constants, $d^{abc}=\text{Tr}[\{T^{a},T^{b}\}T^c]$. We verify that $U(N_c)$ nonlinear sigma model (NLSM) pions, long known to be color-dual in terms of antisymmetric adjoint factors, $f^{abc}$, are also color-dual in the sense of symmetric color structures, $d^{abc}$, explicitly through six-point scattering. This reframing of NLSM pion amplitudes complements our compositional construction of $d^{abc}$ color-dual higher derivative gauge operators. With adjoint and symmetric color-dual kinematics, we can span all four-point effective photon operators via a double-copy construction using amplitudes from physical theories. We further comment on a tension between locality and adjoint effective numerators, and the implications for spanning gravitational effective operators with non-adjoint kinematics.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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