Quantum corrections to frame-dragging in scattering amplitudes
Abstract
Frame-dragging effect manifests itself as polarization direction rotation when linearly polarized electromagnetic/gravitational wave scatters from a spinning point source through gravitational interactions, an effect also known as the gravitational Faraday rotation. Treating general relativity as an effective field theory, the Faraday rotation angle and its quantum corrections are computed using scattering amplitudes. While the classical rotation angle is universal as expected from the equivalence principle, the quantum corrections are found to be different between electromagnetic and gravitational waves, supporting earlier studies that some formulations of the equivalence principle may need reformulation in the quantum regime.
Cite
@article{arxiv.2207.04970,
title = {Quantum corrections to frame-dragging in scattering amplitudes},
author = {Jung-Wook Kim},
journal= {arXiv preprint arXiv:2207.04970},
year = {2022}
}
Comments
accepted version for publication in Phys.Rev.D; discussion on the equivalence principle has been changed to a more conservative tone; 7 pages, 1 TikZ figure, 1 ancillary file