Color-Kinematics Duality in Multi-Regge Kinematics and Dimensional Reduction
Abstract
In this note we study the applicability of the color-kinematics duality to the scattering of two distinguishable scalar matter particles with gluon emission in QCD, or graviton emission in Einstein gravity. Previous analysis suggested that direct use of the Bern-Carrasco-Johansson double-copy prescription to matter amplitudes does not reproduce the gravitational amplitude in multi-Regge kinematics. This situation, however, can be avoided by extensions to the gauge theory, while maintaning the same Regge limit. Here we present two examples of these extensions: the introduction of a scalar contact interaction and the relaxation of the distinguishability of the scalars. In both cases new diagrams allow for a full reconstruction of the correct Regge limit on the gravitational side. Both modifications correspond to theories obtained by dimensional reduction from higher-dimensional gauge theories.
Keywords
Cite
@article{arxiv.1307.3106,
title = {Color-Kinematics Duality in Multi-Regge Kinematics and Dimensional Reduction},
author = {Henrik Johansson and Agustin Sabio Vera and Eduardo Serna Campillo and Miguel A. Vazquez-Mozo},
journal= {arXiv preprint arXiv:1307.3106},
year = {2013}
}
Comments
16 pages, 1 figure; v2 minor changes, typos corrected. It matches the version published in JHEP