From 4d ambitwistor strings to on shell diagrams and back

被引：22
作者：
Farrow, Joseph A. [1 ]
Lipstein, Arthur E. [1 ]
机构：
[1] Univ Durham, Dept Math Sci, Stockton Rd, Durham DH1 3LE, England
来源：
JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 07期
基金：
英国工程与自然科学研究理事会;
关键词：
Scattering Amplitudes; Supergravity Models; Supersymmetric Gauge Theory; N=8 SUPERGRAVITY; GAUGE-THEORY; GRAVITY; GLUON;
D O I：
10.1007/JHEP07(2017)114
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We investigate the relation between 4d ambitwistor string theory and on-shell diagrams for planar N = 4 super-Yang-Mills and N = 8 supergravity, and deduce several new results about their scattering amplitudes at tree-level and 1-loop. In particular, we derive new Grassmannian integral formulae for tree-level amplitudes and obtain new world-sheet formulae for 1-loop amplitudes which are manifestly supersymmetric and supported on scattering equations refined by MHV degree.
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收藏
页数：48
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