Higherorder geometrical optics for electromagnetic waves on a curved spacetime
Abstract
We study the geometricaloptics expansion for circularlypolarized electromagnetic waves propagating on a curved spacetime in general relativity. We show that higherorder corrections to the Faraday and stressenergy tensors may be found via a system of transport equations, in principle. At subleading order, the stressenergy tensor possesses terms proportional to the wavelength whose sign depends on the handedness of the circular polarization. Due to such terms, the direction of energy flow is not aligned with the gradient of the eikonal phase, in general, and the wave may carry a transverse stress.
 Publication:

arXiv eprints
 Pub Date:
 January 2018
 arXiv:
 arXiv:1801.02273
 Bibcode:
 2018arXiv180102273D
 Keywords:

 General Relativity and Quantum Cosmology;
 Astrophysics  Cosmology and Nongalactic Astrophysics;
 Mathematical Physics
 EPrint:
 20 pages, 1 figure