Maurer-Cartan Equations and Black Hole Superpotentials in N =8 Supergravity
arXiv:0911.0135 · doi:10.1103/PhysRevD.81.085013
Abstract
We retrieve the non-BPS extremal black hole superpotential of N=8, d=4 supergravity by using the Maurer-Cartan equations of the symmetric space E_7(7)/SU(8). This superpotential was recently obtained with different 3- and 4-dimensional techniques. The present derivation is independent on the reduction to d=3.
1+22 pages