Asymptotic safety in quantum gravity has various problems, but (as I see it) it has two points in its favor.
First, the hypothesis has apparently passed a significant test which skeptics predicted it would fail (see the 2016 paper cited by Arnold Neumaier).
Second, it was successfully employed to predict the mass of the Higgs boson. As Daniel de França ("MTd2") has remarked, that might be the first confirmed prediction of a quantum gravitational theory!
So I am wondering whether string theory can mimic asymptotic safety. For example, could there be a stringy regime in which gravity is described by one of the truncations of Einstein gravity that has been shown to be asymptotically safe?
This post imported from StackExchange Physics at 2017-01-17 14:08 (UTC), posted by SE-user Mitchell Porter