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arXiv 2103.16441hep-thgr-qchep-ph
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扭量空间的Weyl双拷贝

The Weyl double copy from twistor space

Erick Chacón, Silvia Nagy, Chris D. White

摘要:

外尔双拷贝是一种将双伴随标量、规范和引力理论中的精确解联系起来的方法,它直接将时空中的场联系起来。这个过程从何而来,以及它有多普遍,直到最近仍然是个谜。在本文中,我们展示了Weyl双拷贝的当前形式和范围可以从扭量空间中的某个过程中导出。新的形式主义表明,外尔双副本是更普遍的比以前认为,特别适用于重力解决方案与任意彼得罗夫类型。我们评论如何获得反自对偶以及自对偶领域,并澄清扭量方法中的一些概念问题。

英文摘要:

The Weyl double copy is a procedure for relating exact solutions in biadjoint scalar, gauge and gravity theories, and relates fields in spacetime directly. Where this procedure comes from, and how general it is, have until recently remained mysterious. In this paper, we show how the current form and scope of the Weyl double copy can be derived from a certain procedure in twistor space. The new formalism shows that the Weyl double copy is more general than previously thought, applying in particular to gravity solutions with arbitrary Petrov types. We comment on how to obtain anti-self-dual as well as self-dual fields, and clarify some conceptual issues in the twistor approach.

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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