Classicalization and Unitarity

Understand

We point out that the scenario for UV completion by "classicalization", proposed recently is in fact Wilsonian in the classical Wilsonian sense.

• It corresponds to the situation when a field theory has a nontrivial UV fixed point governed by a higher dimensional operator.
• Provided the kinetic term is a relevant operator around this point the theory will flow in the IR to the free scalar theory.
• Physically, "classicalization", if it can be realized, would correspond to a situation when the fluctuations of the field operator in the UV are smaller than in the IR.