A Note on Graviton Amplitudes for New Twistor String Theories
High Energy Physics - Theory
2008-11-26 v1
Abstract
A new class of twistor string theories were 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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Cite
@article{arxiv.0710.4961,
title = {A Note on Graviton Amplitudes for New Twistor String Theories},
author = {V. P. Nair},
journal= {arXiv preprint arXiv:0710.4961},
year = {2008}
}
Comments
10 pages