The Structure of Multiloop Amplitudes in Gauge and Gravity Theories
High Energy Physics - Theory
2010-12-13 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We review the recently discovered duality between color and kinematics in gauge theories. This duality leads to a remarkably simple double-copy relation between diagrammatic numerators of gravity scattering amplitudes and gauge-theory ones. We summarize nontrivial evidence that the duality and double-copy property holds to all loop orders. We also comment on other developments, including a proof that the gauge-theory duality leads to the gravity double-copy property, and the identification of gauge-theory Lagrangians whose double copies yield gravity Lagrangians.
Keywords
Cite
@article{arxiv.1007.4297,
title = {The Structure of Multiloop Amplitudes in Gauge and Gravity Theories},
author = {Z. Bern and J. J. M. Carrasco and H. Johansson},
journal= {arXiv preprint arXiv:1007.4297},
year = {2010}
}
Comments
To appear in Proceedings of Loops and Legs in Quantum Field Theory, Woerlitz, Germany, April 25-30, 2010; 4 figures