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arXiv 2205.02136hep-thgr-qc
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自对偶双拷贝的非微扰性质

Non-perturbative aspects of the self-dual double copy

Kymani Armstrong-Williams, Chris D. White, Sam Wikeley

摘要:

双副本现在是双伴随标量、规范和引力理论中振幅与经典解之间牢固建立的对应关系。到目前为止,还没有发现四维双拷贝的强耦合例子,以前基于洛伦兹签名中双伴随理论的精确非线性解的尝试都失败了。在本文中,我们反而寻找欧几里德签名中的双伴随解,这可能与杨米尔斯或引力瞬子有关。我们表明,球对称的幂类欧几里德解决方案不存在于恰好四个时空维度。对这种情况的解释是涉及江口-汉森瞬子,其单拷贝结构被发现比以前认为的更复杂(和有趣)。我们提供了一个更一般的处方双复制瞬子,并解释我们的结果如何提供一个更高的维度补充最近提出的非微扰双副本的精确解在两个时空维度。在这样做的时候,我们演示了如何更换颜色的运动李代数操作的水平上的精确经典的解决方案。

英文摘要:

The double copy is by now a firmly-established correspondence between amplitudes and classical solutions in biadjoint scalar, gauge and gravity theories. To date, no strongly coupled examples of the double copy in four dimensions have been found, and previous attempts based on exact non-linear solutions of biadjoint theory in Lorentzian signature have failed. In this paper, we instead look for biadjoint solutions in Euclidean signature, which may be relatable to Yang-Mills or gravitational instantons. We show that spherically symmetric power-like Euclidean solutions do not exist in precisely four spacetime dimensions. The explanation for why this is the case turns out to involve the Eguchi-Hanson instanton, whose single copy structure is found to be more complicated (and interesting) than previously thought. We provide a more general prescription for double-copying instantons, and explain how our results provide a higher-dimensional complement to a recently presented non-perturbative double copy of exact solutions in two spacetime dimensions. In doing so, we demonstrate how the replacement of colour by kinematic Lie algebras operates at the level of exact classical solutions.

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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