Perturbative String Dynamics Near the Photon Sphere
arXiv:hep-th/9809176
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.
REVTEX, 8 pages, no figures