Princeton University Gravity Initiative Seminar

Abstract: Recent work has highlighted a sharp distinction among BPS states in AdS/CFT at finite N: fortuitous states, which cease to be BPS as the gravitational coupling is decreased, in contrast with monotone states. Chang and Lin proposed that fortuitous states account for the black hole entropy, while monotone states account for the entropy of smooth horizonless geometries. 

In this talk, I will review the notion of fortuity and test the proposal by Chang and Lin in the D1–D5 system. Supersymmetric black holes are known to obey non-trivial charge constraints. I will present evidence that fortuitous states satisfy the same charge constraints as the supersymmetric BMPV black hole.