Double copies of fermions and scattering amplitudes in gravity
Leonardo de la Cruz (JGU Mainz)

Calculating gravity amplitudes from the square of gauge theory amplitudes has been a successful method to obtain results in perturbative quantum gravity otherwise unpractical to compute. Two equivalent approaches are based on the Kawai-Lewellen-Tye (KLT) relations and the double copy procedure. We present a generalization of the KLT relations compatible with the double copy procedure that uses QCD-like amplitudes to build gravity amplitudes including massive double copies of fermions.