Perturbative Gravity from QCD Amplitudes

Details Perturbative Gravity from QCD Amplitudes Perturbative Gravity from QCD Amplitudes

1999-04-05

arxiv.org/abs/hep-th/9904026v2

Phys.Lett. B457 (1999) 23-32

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, LaTeX, references added

Scientific paper

10.1016/S0370-2693(99)00524-9

We demonstrate that QCD gluon amplitudes can be used to construct a Lagrangian for gravity. This procedure makes use of perturbative `squaring' relations between gravity and gauge theory that follow from string theory. We explicitly carry out the construction for up to five-point interactions and discuss a set of field variables in the Einstein-Hilbert Lagrangian for interpreting the Lagrangian obtained from QCD. A spin-off from our analysis is that it can be used to provide simpler tree-level gravity Feynman rules than for conventional gauges.

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