Note on graviton amplitudes for new twistor string theories

被引：21
|
作者：
Nair, V. P. [1 ]
机构：
[1] CUNY City Coll, Dept Phys, New York, NY 10031 USA
来源：
PHYSICAL REVIEW D | 2008年 / 78卷 / 04期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevD.78.041501
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A new class of twistor string theories was recently constructed by Abou-Zeid, Hull, and Mason. The most interesting one of these theories has the particle content of N = 8 supergravity. Arguments are given for the vanishing of the ( + - -)-helicity amplitude for gravitons which suggest that this theory describes a chiral N = 8 supergravity rather than Einstein supergravity.
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页数：5
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