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Gauge and Gravity Amplitude Relations

Abstract : In these lectures I talk about simplifications and universalities found in scattering amplitudes for gauge and gravity theories. In contrast to Ward identities, which are understood to arise from familiar symmetries of the classical action, these structures are currently only understood in terms of graphical organizational principles, such as the gauge-theoretic color-kinematics duality and the gravitational double-copy structure, for local representations of multi-loop S-matrix elements. These graphical principles make manifest new relationships in and between gauge and gravity scattering amplitudes. My lectures will focus on arriving at such graphical organizations for generic theories with examples presented from maximal supersymmetry, and their use in unitarity-based multi-loop integrand construction.
Keywords : hep-th
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John Joseph M. Carrasco. Gauge and Gravity Amplitude Relations. World Scientific, 2015, 2015, pp.636. ⟨10.1142/9789814678766_0011⟩. ⟨cea-01529639⟩

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