Semiclassical corrections to the photon orbits of a nonrotating black hole
Abstract
In this paper, we discuss the corrections to the photon orbits of a nonrotating black hole due to semiclassical fluctuations of the metric. It is found that the photon orbit impact parameter differences with the critical impact parameter become of the order of the semiclassical fluctuations. We calculate the effect of the semiclassical fluctuations on the photon orbits and show that instead of circulating the black hole infinite number of times at the critical orbit, the photons bounce off the semiclassical geometry.
 Publication:

International Journal of Modern Physics D
 Pub Date:
 2023
 DOI:
 10.1142/S0218271823501080
 arXiv:
 arXiv:2011.00676
 Bibcode:
 2023IJMPD..3250108M
 Keywords:

 Black holes;
 event horizon telescope;
 semiclassical gravity;
 loop quantum gravity;
 geodesics;
 General Relativity and Quantum Cosmology
 EPrint:
 22 pages, 4 figures, to appear in IJMPD