Null Strings in Kerr Spacetime

TL;DR

This paper derives and analyzes solutions for null strings in Kerr spacetime, providing a framework for understanding their behavior and special configurations, with connections to Schwarzschild spacetime.

Contribution

It introduces a generic ansatz for null strings in Kerr spacetime and presents solutions in quadratures, including special configurations and Schwarzschild limits.

Findings

Derived equations of motion and constraints for null strings in Kerr spacetime.

Presented solutions in quadratures for generic null string configurations.

Explored specific string configurations and their Schwarzschild counterparts.

Abstract

The null string's equations of motion and constraints in the Kerr spacetime are given. We assume a generic ansatz for the null strings in the Kerr spacetime and we present the resulting solutions in quadratures. Some specific string configurations, that follow from the generic one, are considered separately. In each case we also extract the corresponding solutions in the Schwarzschild spacetime.