Ambitwistor string vertex operators on curved backgrounds

被引：12

作者：

Adamo, Tim ^{[1
]}

Casali, Eduardo ^{[2
,3
]}

Nekovar, Stefan ^{[4
]}

机构：

[1] Imperial Coll London, Blackett Lab, Theoret Phys Grp, London SW7 2AZ, England

[2] Univ Calif Davis, Ctr Quantum Math & Phys QMAP, Davis, CA 95616 USA

[3] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA

[4] Univ Oxford, Math Inst, Woodstock Rd, Oxford OX2 6GG, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2019年 / 2019卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

Conformal Field Models in String Theory; Superstrings and Heterotic Strings; Supergravity Models; Scattering Amplitudes;

D O I：

10.1007/JHEP01(2019)213

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 present vertex operators for ambitwistor strings around generic Yang-Mills, gravity and NS-NS backgrounds. The requirement that vertex operators lie in the BRST cohomology of the worldsheet theory enforces the appropriate linear equations of motion (as well as gauge fixing conditions) for the respective perturbations in these backgrounds. Due to the nature of ambitwistor strings, no approximation is taken and all calculations around the backgrounds are exact.

引用

页数：18

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