Agravity up to infinite energy

Understand

The self-interactions of the conformal mode of the graviton are controlled, in dimensionless gravity theories (agravity), by a coupling $f_0$ that is not asymptotically free.

• We show that, nevertheless, agravity can be a complete theory valid up to infinite energy.
• When $f_0$ grows to large values, the conformal mode of the graviton decouples from the rest of the theory and does not hit any Landau pole provided that scalars are asymptotically conformally coupled and all other couplings approach fixed points.
• Then, agravity can flow to conformal gravity at infinite energy.