期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP03(2019)087
关键词
Scattering Amplitudes; Conformal Field Theory; Supersymmetric Gauge Theory
资金
- Galileo Galilei Institute in Florence
- ERC [648630 IQFT]
We exploit the recently described property of cluster adjacency for scattering amplitudes in planar N=4 super Yang-Mills theory to construct the symbol of the four-loop NMHV heptagon amplitude. We use a manifestly cluster adjacent ansatz and describe how the parameters of this ansatz are determined using simple physical consistency requirements. We then specialise our answer for the amplitude to the multi-Regge limit, finding agreement with previously available results up to the next-to-leading logarithm, and obtaining new predictions up to (next-to)(3)-leading-logarithmic accuracy.
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