A Note on Graviton Amplitudes for New Twistor String Theories

Details A Note on Graviton Amplitudes for New Twistor String Theories A Note on Graviton Amplitudes for New Twistor String Theories

2007-10-26

arxiv.org/abs/0710.4961v1

Phys.Rev.D78:041501,2008

Physics

High Energy Physics

High Energy Physics - Theory

10 pages

Scientific paper

10.1103/PhysRevD.78.041501

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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