A Critique of the Asymptotic Safety Program

Understand

The present practice of Asymptotic Safety in gravity is in conflict with explicit calculations in low energy quantum gravity.

• This raises the question of whether the present practice meets the Weinberg condition for Asymptotic Safety.
• I argue, with examples, that the running of $\Lambda$ and $G$ found in Asymptotic Safety are not realized in the real world, with reasons which are relatively simple to understand.
• A comparison/contrast with quadratic gravity is also given, which suggests a few obstacles that must be overcome before the Lorentzian version of the theory is well behaved.