Monodromy and Kawai-Lewellen-Tye Relations for Gravity Amplitudes

N. E. J. Bjerrum-Bohr (1) , P. Vanhove (2, 3)

1 NBI - Niels Bohr Institute [Copenhagen]
2 IHES - Institut des Hautes Études Scientifiques
3 IPHT - Institut de Physique Théorique - UMR CNRS 3681

We are still learning intriguing new facets of the string theory motivated Kawai-Lewellen-Tye (KLT) relations linking products of amplitudes in Yang-Mills theories and amplitudes in gravity. This is very clearly displayed in computations of N=8 supergravity where the perturbative expansion show a vast number of similarities to that of N=4 super-Yang-Mills. We will here investigate how identities based on monodromy relations for Yang-Mills amplitudes can be very useful for organizing and further streamlining the KLT relations yielding even more compact results for gravity amplitudes.

Domaines: Physique des Hautes Energies - Théorie [hep-th]

N. E. J. Bjerrum-Bohr, P. Vanhove. Monodromy and Kawai-Lewellen-Tye Relations for Gravity Amplitudes. 2010. ⟨hal-00463738⟩