Systematic redefinition of bare parameters (mass, coupling, wavefunction) to absorb UV divergences and yield finite predictions at a chosen scale μ. Renormalisable theories have a finite set of counterterms.
Systematic redefinition of bare parameters (mass, coupling, wavefunction) to absorb UV divergences and yield finite predictions at a chosen scale μ. Renormalisable theories have a finite set of counterterms.