Emil Bjerrum-Bohr's recent paper is "Editors' Suggestion" at Physics Review Letters
Emil Bjerrum-Bohr, Barry Holstein, Ludovic Planté, John Donoghue and Pierre Vanhove (a frequent visitor at the NBIA) have had a paper highlighted as an "Editors' Suggestion" of Physical Review Letters. The paper concerns the use gravity as an effective field theory, a systematic low-energy expansion of the otherwise unknown underlying quantum field theory of gravity. Through an effective field theory description and modern on-shell techniques for computation, they describe analytically the leading quantum effect to the bending of light caused by a heavy object like the Sun or a Schwarzschild black hole. While the effect is tiny, about (80 orders of magnitude smaller than the General relativity effects), it is shown that the quantum effects do make a difference in that the photon's motion can no longer be envisioned as being confined to a simple geodesic curve. The Letter's approach to computations of quantum gravity effects provides a simple path forward for quantum computations in gravity and sets a standard for how to investigate quantum effects in gravitational contexts.