Bending of Light in Quantum GravityPhysical Review Letters (2015)
AbstractWe consider the scattering of lightlike matter in the presence of a heavy scalar object (such as the Sun or a Schwarzschild black hole). By treating general relativity as an effective field theory we directly compute the nonanalytic components of the one-loop gravitational amplitude for the scattering of massless scalars or photons from an external massive scalar field. These results allow a semiclassical computation of the bending angle for light rays grazing the Sun, including long-range ℏ contributions. We discuss implications of this computation, in particular the violation of some classical formulations of the equivalence principle.
Publication DateFebruary 12, 2015
Citation InformationN.E.J. Bjerrum-Bohr, John F. Donoghue, Barry R Holstein, Ludovic Planté, et al.. "Bending of Light in Quantum Gravity" Physical Review Letters (2015)
Available at: http://works.bepress.com/barry_holstein/216/