Complete construction of magical, symmetric and homogeneous N=2 supergravities as double copies of gauge theories

Understand

We show that scattering amplitudes in magical, symmetric or homogeneous N=2 Maxwell-Einstein supergravities can be obtained as double copies of two gauge theories, using the framework of color/kinematics duality.

• The left-hand-copy is N=2 super-Yang-Mills theory coupled to a hypermultiplet, whereas the right-hand-copy is a non-supersymmetric theory that can be identified as the dimensional reduction of a D-dimensional Yang-Mills theory coupled to P fermions.
• For generic D and P, the double copy gives homogeneous supergravities.
• For P=1 and D=7,8,10,14, it gives the magical supergravities.