# Higher-order geometrical optics for electromagnetic waves on a curved spacetime

@article{Dolan2018HigherorderGO, title={Higher-order geometrical optics for electromagnetic waves on a curved spacetime}, author={Sam R. Dolan}, journal={arXiv: General Relativity and Quantum Cosmology}, year={2018} }

We study the geometrical-optics expansion for circularly-polarized electromagnetic waves propagating on a curved spacetime in general relativity. We show that higher-order corrections to the Faraday and stress-energy tensors may be found via a system of transport equations, in principle. At sub-leading order, the stress-energy 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…

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