论文标题
对巨大超级极限极限的壳体观点
On-Shell Perspectives on the Massless Limit of Massive Supergravity
论文作者
论文摘要
大量重力在其2分线性化振幅中表现出著名的不连续性，用于重力来源的T通道散射，以$ m \至0 $限制。从本质上讲，这种VDVZ不连续性的来源是零螺旋模式在此限制中脱离的故障。在[1]中，我们展示了如何在现代壳方法，尤其是BCFW结构的背景下可以理解该结果。在本文中，我们提供了与Deser，Kay和Stelle最初发现的同样有趣但鲜为人知的不连续性相似的视角。
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.
