New Twistor String Theories revisited
High Energy Physics - Theory
2014-11-18 v2
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.
Cite
@article{arxiv.0902.0550,
title = {New Twistor String Theories revisited},
author = {Johannes Broedel and Bernhard Wurm},
journal= {arXiv preprint arXiv:0902.0550},
year = {2014}
}
Comments
15 pages, v2: typos corrected, replaced with published version