KLT relations from the Einstein-Hilbert Lagrangian

Ananth, Sudarshan; Theisen, Stefan

doi:10.1016/j.physletb.2007.07.003

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KLT relations from the Einstein-Hilbert Lagrangian

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Ananth, Sudarshan
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Theisen, Stefan
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Citation

Ananth, S., & Theisen, S. (2007). KLT relations from the Einstein-Hilbert Lagrangian. Physics Letters B, 652(2-3), 128-134. doi:10.1016/j.physletb.2007.07.003.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-47F7-D

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.