The (amazing) Super-Maze

TL;DR

This paper introduces a new super-maze configuration in M-theory, formed by backreacted little strings on M5 branes with added momentum waves, potentially leading to horizonless microstate solutions that account for a significant portion of black hole entropy.

Contribution

It models a novel super-maze structure in M-theory, incorporating backreaction and momentum waves, advancing the understanding of black hole microstates.

Findings

The super-maze preserves 16 supercharges locally.

It potentially accounts for /6 of the black hole entropy.

The structure suggests a new class of horizonless microstate solutions.

Abstract

The entropy of the three-charge NS5-F1-P black hole in Type IIA string theory comes from the breaking of $N_1$ F1 strings into $N_1 N_5$ little strings, which become independent momentum carriers. In M theory, the little strings correspond to strips of M2 brane that connect pairs of parallel M5 branes separated along the M-theory direction. We show that if one takes into account the backreaction of the M-theory little strings on the M5 branes one obtains a maze-like structure, to which one can add momentum waves. We also show that adding momentum waves to the little strings gives rise to a momentum-carrying brane configuration -- a super-maze -- which locally preserves 16 supercharges. We therefore expect the backreaction of the super-maze to give rise to a new class of horizonless black-hole microstate solutions, which preserve the rotational symmetry of the black-hole horizon and carry $\sqrt{5/6}$ of its entropy.