Einstein Supergravity and New Twistor String Theories

被引：0
作者：
Mohab Abou-Zeid
Christopher M. Hull
Lionel J. Mason
机构：
[1] Vrije Universiteit Brussel & The International Solvay Institutes,Theoretische Natuurkunde
[2] The Blackett Laboratory,Theoretical Physics Group
[3] Imperial College London,The Institute for Mathematical Sciences
[4] Imperial College London,The Mathematical Institute
[5] University of Oxford,undefined
来源：
Communications in Mathematical Physics | 2008年 / 282卷
关键词：
Vertex Operator; Open String; Poisson Structure; Twistor Space; Conformal Supergravity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A family of new twistor string theories is constructed and shown to be free from world-sheet anomalies. The spectra in space-time are calculated and shown to give Einstein supergravities with second order field equations instead of the higher derivative conformal supergravities that arose from earlier twistor strings. The theories include one with the spectrum of N = 8 supergravity, another with the spectrum of N = 4 supergravity coupled to N = 4 super-Yang-Mills, and a family with N ≥ 0 supersymmetries with the spectra of self-dual supergravity coupled to self-dual super-Yang-Mills. The non-supersymmetric string with N = 0 gives self-dual gravity coupled to self-dual Yang-Mills and a scalar. A three-graviton amplitude is calculated for the N = 8 and N = 4 theories and shown to give a result consistent with the cubic interaction of Einstein supergravity.
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页码：519 / 573
页数：54
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