Non-parallel Electric and Magnectic Fields in a Gravitational Background, Stationary Gravitational Waves and Gravitons
arXiv:hep-th/9607175
Abstract
The existence of an electromagnectic field with parallel electric and magnetic components is readdressed in the presence of a gravitational field. A non-parallel solution is shown to exist. Next, we analyse the possibility of finding stationary gravitational waves in de nature. Finaly, We construct a D=4 effective quantum gravity model. Tree-level unitarity is verified.
6 pages, Latex