Almost BPS black holes

Understand

We study non-BPS black hole solutions to ungauged supergravity with 8 supercharges coupled to vector multiplets in four and five dimensions.

• We identify a large class of five dimensional non-BPS solutions, which we call "almost BPS", that are supersymmetric on local patches and satisfy a first order flow governed by harmonic functions.
• By dimensional reduction, they give rise to new non-BPS solutions in four dimensions.
• These solutions allow for some nontrivial asymptotic moduli and multiple centres, similar to their globally supersymmetric cousins.