A Chiral Perturbation Expansion for Gravity
High Energy Physics - Theory
2009-11-11 v2
Abstract
A formulation of Einstein gravity, analogous to that for gauge theory arising from the Chalmers-Siegel action, leads to a perturbation theory about an asymmetric weak coupling limit that treats positive and negative helicities differently. We find power counting rules for amplitudes that suggest the theory could find a natural interpretation in terms of a twistor-string theory for gravity with amplitudes supported on holomorphic curves in twistor space.
Keywords
Cite
@article{arxiv.hep-th/0511189,
title = {A Chiral Perturbation Expansion for Gravity},
author = {M. Abou-Zeid and C. M. Hull},
journal= {arXiv preprint arXiv:hep-th/0511189},
year = {2009}
}
Comments
11 pages, LaTeX, no figures; v2: one reference added