renormalizable
Adjective
Meaning
renormalizable (not comparable)
That can be renormalized.
Examples
Because of this, renormalizable theories are insensitive to the precise nature of the underlying high-energy short-distance phenomena.
A theory is perturbatively renormalizable when the constants in the Lagrangian only diverge at worst as logarithms of the lattice spacing for very short spacings.
In general, a QFT is called renormalizable, if all infinities can be absorbed into a redefinition of a finite number of coupling constants and masses.
The renormalization group describes how renormalizable theories emerge as the long distance low-energy effective field theory for any given high-energy theory.
From a technical point of view, the problem is that the theory one gets in this way is not renormalizable and therefore cannot be used to make meaningful physical predictions.
In this case the theory is said to be renormalizable.