KLT relations from the Einstein-Hilbert Lagrangian

Abstract

The Kawai-Lewellen-Tye (KLT) relations derived from string theory tell us that perturbative gravity amplitudes are the "square" of the corresponding amplitudes in gauge theory. Starting from the light-cone Lagrangian for pure gravity we make these relations manifest off-shell, for three- and four-graviton vertices, at the level of the action.

9 pages

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• Effective action for Einstein-Maxwell theory at order RF**4
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• Applications of Subleading-color Amplitudes in N=4 SYM Theory
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