Adding momentum to D1-D5 system

TL;DR

This paper constructs a regular, asymptotically flat three-charge D1-D5-P solution using spectral flow, providing a microscopic state model for black hole entropy in string theory.

Contribution

It presents the first regular, three-charge asymptotically flat solution in the D1-D5 system, linking gravity solutions with dual CFT spectral flow.

Findings

Solution is completely regular everywhere.

Matches properties expected of black hole microstates.

Supports the microscopic understanding of black hole entropy.

Abstract

We construct the first example of asymptotically flat solution which carries three charges (D1,D5 and momentum) and which is completely regular everywhere. The construction utilizes the relation between gravity solutions and spectral flow in the dual CFT. We show that the solution has the right properties to describe one of the microscopic states which are responsible for the entropy of the black hole with three charges.