Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2007-11-23
Class.Quant.Grav.26:035024,2009
Physics
High Energy Physics
High Energy Physics - Theory
18pp, no figures, Journal version
Scientific paper
10.1088/0264-9381/26/3/035024
The propagation of light in area metric spacetimes, which naturally emerge as refined backgrounds in quantum electrodynamics and quantum gravity, is studied from first principles. In the geometric-optical limit, light rays are found to follow geodesics in a Finslerian geometry, with the Finsler norm being determined by the area metric tensor. Based on this result, and an understanding of the non-linear relation between ray vectors and wave covectors in such refined backgrounds, we study light deflection in spherically symmetric situations, and obtain experimental bounds on the non-metricity of spacetime in the solar system.
Punzi Raffaele
Schuller Frederic P.
Wohlfarth Mattias N. R.
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