Perturbative String Dynamics Near the Photon Sphere

TL;DR

This paper investigates how strings behave near the photon sphere in Schwarzschild spacetime using a perturbative approach, providing approximate solutions that describe small deformations of the photon sphere.

Contribution

It introduces a perturbative method to analyze string dynamics near the photon sphere, offering explicit zeroth and first-order solutions.

Findings

Perturbative solutions describe small deformations of the photon sphere.

First-order corrections provide insights into string behavior in curved spacetime.

The approach simplifies complex string dynamics near strong gravitational fields.

Abstract

String dynamics near the photon sphere in Schwarzschild spacetime is considered on the basis of a perturbative approach with respect to a rescaled string tension as a small parameter. The perturbative string solution in the zeroth and first approximation is presented. The perturbative solution corresponds to a small deformations of the photon sphere in Schwarzschild spacetime.