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arXiv 2104.04510hep-thgr-qchep-ph
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Classical Gravity from Loop Amplitudes

N. Emil J. Bjerrum-Bohr, Poul H. Damgaard, Ludovic Planté, Pierre Vanhove

摘要:

我们描述了一种有效的方法提取部分的$D$维回路积分,需要从散射振幅在经典广义相对论中获得可观的。我们的方法简化了软区域的集成方法,明智地结合最后的集成之前的条款。我们证明了该方法通过计算所需的积分黑洞散射的第二次后闵可夫斯基为了爱因斯坦引力耦合标量。我们还证实了最近的结果,在第三次后闵可夫斯基秩序的普遍性和高能量行为的引力相互作用在最大的超引力。

英文摘要:

We describe an efficient method for extracting the parts of $D$-dimensional loop integrals that are needed to derive observables in classical general relativity from scattering amplitudes. Our approach simplifies the soft-region method of integration by judiciously combining terms before the final integrations. We demonstrate the method by computing the required integrals for black-hole scattering to the second Post-Minkowskian order in Einstein gravity coupled to scalars. We also confirm recent results at the third Post-Minkowskian order regarding universality and high-energy behavior of gravitational interactions in maximal supergravity.

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