In this paper we evaluate the modified celestial amplitude for gravitons and gluons, as defined in [ 4 ]. We find that the modified (tree) amplitude is finite for gravitons in Einstein gravity. The modified amplitude behaves like correlation function of operators inserted at various points of null-infinity in the Minkowski space-time. Therefore, unlike the standard celestial amplitudes, these are three dimensional objects. We also show that this amplitude admits conformal soft factorization recently studied in the literature.

中文翻译：

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爱因斯坦引力中修正的天体振幅

在本文中，我们评估了 [4] 中定义的引力子和胶子的修正天体振幅。我们发现爱因斯坦引力中的引力子的修正（树）振幅是有限的。修改后的振幅表现得像插入在闵可夫斯基时空各个零无穷点的算子的相关函数。因此，与标准天体振幅不同，这些是三维物体。我们还表明，这个幅度允许最近在文献中研究的保形软分解。