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Color-kinematics duality and dimensional reduction for graviton emission in Regge limit
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In this talk we review the work in [1,2,3] where we have studied the applicability of the color-kinematics duality to the scattering of two distinguishable scalar matter particles with one gluon emission in QCD, or one graviton emission in Einstein gravity. We have shown that the duality works well in the Regge limit under two different extensions of the gauge theory: the introduction of a new scalar contact interaction and the relaxation of the distinguishability of the scalars. Both modifications correspond to theories obtained by dimensional reduction from higher-dimensional pure gauge theories.
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The double-logarithmic four-graviton Regge sector as a rank-two twisted period system
The Mellin partial wave for four-graviton scattering in supergravity is recast as a rank-two twisted period system of weighted integrals that satisfy first-order differential equations and a recursion with the number ...
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