arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.07181hep-thgr-qc
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拓扑和威尔逊线:双拷贝的全局方面

Topology and Wilson lines: global aspects of the double copy

Luigi Alfonsi, Chris D. White, Sam Wikeley

摘要:

Kerr-Schild双拷贝涉及规范理论和引力理论的精确解。在前面的所有例子中,引力解都与类阿贝尔规范理论对象相关联,它使杨-米尔斯方程线性化。这似乎与散射振幅的双拷贝不一致,在双拷贝中,规范理论的非阿贝尔性质起着至关重要的作用。此外,我们还不清楚经典场的整体性质--比如非平凡拓扑--是否可以在规范场和引力场之间匹配。在本文中,我们澄清了这些问题,明确展示了如何磁单极子与任意规范群可以双重复制到相同的解决方案(纯NUT度规)在重力。我们进一步描述了如何匹配拓扑信息的双拷贝对应的两侧,独立的规范群的性质。这些信息是整齐地表示在威尔逊线运营商,我们认为,通过具体的例子,他们提供了一个有用的桥梁之间的经典双副本和BCJ双副本的散射振幅。

英文摘要:

The Kerr-Schild double copy relates exact solutions of gauge and gravity theories. In all previous examples, the gravity solution is associated with an abelian-like gauge theory object, which linearises the Yang-Mills equations. This appears to be at odds with the double copy for scattering amplitudes, in which the non-abelian nature of the gauge theory plays a crucial role. Furthermore, it is not yet clear whether or not global properties of classical fields - such as non-trivial topology - can be matched between gauge and gravity theories. In this paper, we clarify these issues by explicitly demonstrating how magnetic monopoles associated with arbitrary gauge groups can be double copied to the same solution (the pure NUT metric) in gravity. We further describe how to match up topological information on both sides of the double copy correspondence, independently of the nature of the gauge group. This information is neatly expressed in terms of Wilson line operators, and we argue through specific examples that they provide a useful bridge between the classical double copy and the BCJ double copy for scattering amplitudes.

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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