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arXiv · 2112.00978

Color-kinematics duality, double copy and the unitarity method for higher-derivative QCD and quadratic gravity

Gabriel Menezes
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Abstract

Here we discuss color-kinematics duality for higher-derivative QCD-like amplitudes. We explicitly show that the duality still holds in this case and it can be instrumental in constructing the associated quadratic-gravity amplitudes by using the double-copy prescription. This allows one to drastically simplify calculations. We also evaluate some tree-level Compton scattering amplitudes in higher-derivative Yang-Mills and quadratic gravity coupled with matter. Furthermore, we illustrate the application of generalized unitarity method for both cases by studying a specific one-loop amplitude.

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Gabriel Menezes. 2021-12-02. Color-kinematics duality, double copy and the unitarity method for higher-derivative QCD and quadratic gravity. https://doi.org/10.1007/jhep03(2022)074

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