Solitons as ground states in supergravity theories

Abstract

We discuss recent soliton solutions in a class of 𝐷 = 4 supergravity theories. For suitable values of the parameters, the new configurations can be embedded in the gauged maximal N = 8 theory and uplifted in the higher-dimensional 𝐷 = 11 theory. We also consider supersymmetric solutions and their stability, in light of the prescriptions of the positive energy theorem.