1. Bending of Light in Quantum Gravity.
- Author
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Bjerrum-Bohr, N. E. J., Donoghue, John F., Holstein, Barry R., Planté, Ludovic, and Vanhove, Pierre
- Subjects
- *
QUANTUM gravity , *QUANTUM theory , *PHOTONS , *RELATIVITY & quantum mechanics , *GENERAL relativity (Physics) - 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 h contributions. We discuss implications of this computation, in particular, the violation of some classical formulations of the equivalence principle. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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