| Renormalization has been the standard technique used in quantum field theory for 50 years. However, this technique relies upon perturbation theory, and it is easy to show that quantum field theory must be non-perturbative. Consequently, other techniques for solving Feynman diagrams must be used. Proper normalization is a non-perturbative technique which can be used to solve problems in quantum field theory. Instead of using cut-off masses and renormalized charges, proper normalization includes a proper normalization factor for each propagator. This makes the calculation necessarily finite. In this calculation, proper normalization is used to determine the magnetic moment of a charged vector meson, such as the rho meson. |
