# Supercharging Superstrata

## TL;DR

This paper constructs new smooth, horizonless microstate geometries for the supersymmetric D1-D5-P black hole, using fermionic symmetries and backreaction calculations to find simpler solutions with explicit CFT duals.

## Contribution

It introduces a new class of superstrata solutions with simpler structures, expanding the landscape of microstate geometries in supergravity.

## Key findings

- Derived full non-linear solutions in AdS and flat space
- Generated new momentum-carrying perturbations with explicit CFT duals
- Found geometries with simpler structure than previous superstrata

## Abstract

We construct a new class of smooth horizonless microstate geometries of the supersymmetric D1-D5-P black hole in type IIB supergravity. We first work in the AdS$_3 \times S^3$ decoupling limit and use the fermionic symmetries of the theory to generate new momentum carrying perturbations in the bulk that have an explicit CFT dual description. We then use the supergravity equations to calculate the backreaction of these perturbations and find the full non-linear solutions both in the asymptotically AdS and asymptotically flat case. These new geometries have a simpler structure than the previously known superstrata solutions.