Spinning particle, rotating black hole and twistor-string

TL;DR

This paper explores the complex structure of spinning particles derived from rotating black hole solutions, revealing twistorial and stringy systems, with implications for scattering and the Dirac equation.

Contribution

It introduces a novel twistorial and stringy framework for spinning particles based on Kerr geometry, linking black hole solutions to twistor-string theory.

Findings

Mass and spin originate from Kerr string excitations

Dirac equation describes axial string excitations

Complex Kerr geometry contains an open twistor-string

Abstract

Structure of spinning particle based on the rotating black hole solution is considered. It has gyromagnetic ratio $g=2$ and a nontrivial twistorial and stringy systems. The mass and spin appear from excitations of the Kerr circular string, while the Dirac equation describes excitations of an {\it axial} stringy system which is responsible for scattering. Complex Kerr geometry contains an open twistor-string, target space of which is equivalent to the Witten's `diagonal' of the $ CP^3\times CP^{*3}$.