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arXiv · hep-th/9809163

Perturbative Relationships Between QCD and Gravity and Some Implications

Z. Bern·L. Dixon·D. C. Dunbar·M. Perelstein·J. S. Rozowsky
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Abstract

We discuss nontrivial examples illustrating that perturbative gravity is in some sense the `square' of gauge theory. This statement can be made precise at tree-level using the Kawai, Lewellen and Tye relations between open and closed string tree amplitudes. These relations, when combined with modern methods for computing amplitudes, allow us to obtain loop-level relations, and thereby new supergravity loop amplitudes. The amplitudes show that N=8 supergravity is less ultraviolet divergent than previously thought. As a different application, we show that the collinear splitting amplitudes of gravity are essentially squares of the corresponding ones in QCD.

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Z. Bern, L. Dixon, D. C. Dunbar, M. Perelstein, J. S. Rozowsky. 1998-09-22. Perturbative Relationships Between QCD and Gravity and Some Implications. https://arxiv.org/abs/hep-th/9809163

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