Superrenormalizable
Superrenormalizable is a term used in quantum field theory to describe a theory where the coupling constants, which dictate the strength of interactions, have negative mass dimensions. This property has significant implications for how the theory behaves at different energy scales. In a superrenormalizable theory, divergences that arise in calculations, typically when considering interactions at very high energies or very short distances, can be absorbed into the redefinition of a finite number of parameters. This process is known as renormalization.
Unlike asymptotically free theories, where the coupling constant decreases at high energies, or trivial theories, where
A key characteristic of superrenormalizable theories is that the number of divergent diagrams that require renormalization