Dynamics of Extreme Black Holes and Massive String States

TL;DR

This paper provides dynamical evidence linking certain massive string states to extreme black holes by comparing their scattering behaviors at low velocities.

Contribution

It offers new support for the identification of specific heterotic string states with extreme black holes through scattering analysis.

Findings

String state scattering matches black hole scattering at low velocities

Supports the black hole-string correspondence in four dimensions

Enhances understanding of black hole microstates in string theory

Abstract

In a recent paper, Duff and Rahmfeld argued that certain massive $N_R=1/2$ states of the four-dimensional heterotic string correspond to extreme black hole solutions. We provide further, dynamical, evidence for this identification by comparing the scattering of these elementary string states with that of the corresponding extreme black holes, in the limit of low velocities.