Quantum gravitational optics in the field of a gravitomagnetic monopole
arXiv:gr-qc/0607135 · doi:10.1088/1742-6596/67/1/012056
Abstract
Vacuum polarization in QED in a background gravitational field induces interactions which {\it effectively} modify the classical picture of light rays as the null geodesics of spacetime. After a short introduction on the main aspects of the quantum gravitational optics, as a nontrivial example, we study this effect in the background of NUT space characterizing the spacetime of a spherical mass endowed with a gravitomagnetic monopole charge, the so called NUT factor.
9 pages, title changed and the text abridged for publication in the Journal of Physics: Conference series