Orientifold D-String in the Source of the Kerr Spinning Particle

TL;DR

This paper models the Kerr singular ring as an orientifold D-string, revealing it as a new open string solution with ends in circular light-like motion, offering insights into spinning particles in general relativity.

Contribution

It introduces a novel interpretation of the Kerr singular ring as an orientifold D-string, expanding the understanding of string solutions in gravitational backgrounds.

Findings

Kerr singular ring can be modeled as an orientifold D-string.

The Kerr string is a new type of open string with joined ends.

Ends of the Kerr string move in circular light-like trajectories.

Abstract

The model of spinning particle, based on the Kerr-Newman solution with |a}>>m, is discussed. It is shown that the Kerr singular ring can be considered as a string with an orientifold world-sheet. Orientifold adds to the Kerr ring an extra peculiar point, the fixed point of the world-sheet parity operator. It is shown that the Kerr string represents a new type of the string solutions and turns out to be an open D-string with joined ends which are in the circular light-like motion along the Kerr ring.