Perturbative superstrata

TL;DR

This paper constructs and analyzes a class of superstrata microstate solutions in string theory, incorporating linear and some non-linear corrections, including KK-monopole effects, to better understand black hole microstates.

Contribution

It provides the first explicit superstratum solution that includes KK-monopole dipole charge effects to first order, advancing the microstate geometry program.

Findings

Derived linearized supergravity solutions from open string probes.

Presented generalized solutions capturing non-linear corrections.

First explicit superstratum with KK-monopole dipole charge included.

Abstract

We study a particular class of D-brane bound states in type IIB string theory (dubbed "superstrata") that describe microstates of the 5D Strominger-Vafa black hole. By using the microscopic description in terms of open strings we probe these configurations with generic light closed string states and from there we obtain a linearized solution of six-dimensional supergravity preserving four supersymmetries. We then discuss two generalizations of the solution obtained which capture different types of non-linear corrections. By using this construction, we can provide the first explicit example of a superstratum solution which includes the effects of the KK-monopole dipole charge to first order.