arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.14077hep-thgr-qc
收藏

大质量超引力无质量极限的壳上观点

On-Shell Perspectives on the Massless Limit of Massive Supergravity

Daniel J Burger, Nathan Moynihan, Jeff Murugan

摘要:

在$m \to 0$极限下,大质量重力场在其2点线性化振幅中对于重力源的t通道散射表现出著名的不连续性。本质上,这种vDVZ不连续性的来源是零螺旋度模式在该极限下解耦的失败。在[1]中,我们展示了如何在现代壳方法的背景下理解这个结果,特别是BCFW构造。在这篇文章中,我们提供了一个类似的壳层上的观点,同样有趣的,但鲜为人知的不连续性首次发现的Deser,凯和Stelle在大规模超引力。

英文摘要:

Massive gravity exhibits a famous discontinuity in its 2-point linearized amplitude for t-channel scattering of gravitational sources, in the $m \to 0$ limit. In essence, the source of this vDVZ discontinuity is in the failure of the zero-helicity mode to decouple in this limit. In [1], we showed how this result could be understood in the context of modern on-shell methods and, in particular, the BCFW construction. In this article, we provide a similar on-shell perspective to the equally interesting but lesser known discontinuity first discovered by Deser, Kay and Stelle in massive supergravity.

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。

↑