Single-centered black hole microstate degeneracies from instantons in supergravity
Single-centered black hole microstate degeneracies from instantons in supergravity
We obtain holographic constraints on the microscopic degeneracies of black holes by computing the exact macroscopic quantum entropy using localization, including the effects of string worldsheet instantons in the supergravity effective action. For $\frac14$-BPS black holes in type II string theory on $K3 \times T^{2}$, the constraints can be explicitly …