Microstate solutions from black hole deconstruction

TL;DR

This paper introduces a new class of supergravity solutions derived from M2-branes that shed light on black hole microstates and their holographic duals, advancing understanding of black hole entropy in string theory.

Contribution

It constructs asymptotic AdS_3 x S^2 solutions from M2-brane backreaction, linking supergravity solutions to black hole microstate counting via deconstruction.

Findings

Solutions are free of closed timelike curves.

They provide a holographic description of black hole microstates.

The solutions support the deconstruction approach to black hole entropy.

Abstract

We present a new family of asymptotic AdS_3 x S^2 solutions to eleven dimensional supergravity compactified on a Calabi-Yau threefold. They originate from the backreaction of S^2-wrapped M2-branes, which play a central role in the deconstruction proposal for the microscopic interpretation of the D4-D0 black hole entropy. We show that they are free of possible pathologies such as closed timelike curves and discuss their holographic interpretation.