Article
Bending of light in Quantum Gravity
Physical Review Letters
(2015)
Abstract
We 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
contributions. We discuss implications of this computation, in particular the violation of some classical formulations of the equivalence principle.
Disciplines
Publication Date
2015
DOI
10.1103/PhysRevLett.114.061301
Citation Information
John Donoghue, N. E. J Bjerrum-Bohr, Barry R Holstein, Ludovic Plante, et al.. "Bending of light in Quantum Gravity" Physical Review Letters Vol. 114 Iss. 061301 (2015) Available at: http://works.bepress.com/john_donoghue/169/