Bending of light in quantum gravity

Publication date: Sat, Feb 14, 2015 - 5:43pm

A recent paper in Physical Review Letters by John Donoghue and Barry Holstein, with colleagues from France and Denmark, is highlighted in Physics. They present new techniques to calculate the quantum correction to the bending of starlight in General Relativity. Though too small to be measured, the result is interesting because it violates some classical formulations of the Equivalence Principle.

Image Credit NASA