Eikonal methods applied to gravitational scattering amplitudes
Eikonal methods applied to gravitational scattering amplitudes
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应用于引力散射振幅的 Eikonal 方法
DOI：
10.1007/jhep05(2011)087
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发表时间：
2011
影响因子：
5.4
通讯作者：
H. Schnitzer
中科院分区：
文献类型：
--
作者：
S. Naculich;H. Schnitzer
我们将规范理论中的因式分解和eikonal方法应用于重力散射振幅。我们假设这些振幅因子为ir发散软函数和ir有限硬函数，前者由引力威尔逊线算子乘积的期望值给出。利用这种方法，我们证明了n-重子散射振幅的红外发散部分由单环红外发散的指数给出，正如Weinberg最初发现的那样，在维度正则化中没有额外的子红外发散贡献。
We apply factorization and eikonal methods from gauge theories to scattering amplitudes in gravity. We hypothesize that these amplitudes factor into an IR-divergent soft function and an IR-finite hard function, with the former given by the expectation value of a product of gravitational Wilson line operators. Using this approach, we show that the IR-divergent part of the n-graviton scattering amplitude is given by the exponential of the one-loop IR divergence, as originally discovered by Weinberg, with no additional subleading IR-divergent contributions in dimensional regularization.