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Journal Article

New Twistor String Theories revisited

MPS-Authors
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Brödel,  Johannes
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Wurm,  Bernhard
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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plb675_463.pdf
(Publisher version), 192KB

0902.0550v1.pdf
(Preprint), 172KB

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Citation

Brödel, J., & Wurm, B. (2009). New Twistor String Theories revisited. Physics Letters B, 675, 463-468. doi:10.1016/j.physletb.2009.04.053.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-45C7-7
Abstract
A gauged version of Berkovits twistor string theory featuring the particle content of N=8 supergravity was suggested by Abou-Zeid, Hull and Mason. The equations of motion for a particular multiplet in the modified theory are examined on the level of basic twistor fields and thereby shown to imply the vanishing of the negative helicity graviton on-shell. Additionally, the restrictions emerging from the equation of motion for the new gauge field \bar{B} reveal the chiral nature of interactions in theories constructed in this manner. Moreover, a particular amplitude in Berkovits open string theory is shown to be in agreement with the corresponding result in Einstein gravity.