Experimentally testing asymptotically safe quantum gravity with   photon-photon scattering
  Matter-quantum gravity interactions can be used for direct and also indirect experimental tests of quantum gravity. We focus on photon-photon scattering in asymptotically safe gravity as a direct test of the small-scale structure of spacetime, and discuss how near-future experiments can probe asymptotic safety in a setting with large extra dimensions. 
Astrid Eichhorn
hep-th gr-qc