Abstract
The general method for constructing invariant phenomenological Lagrangians is described. The fields are assumed to transform according to (nonlinear) realizations of an internal symmetry group, given in standard form. The construction proceeds through the introduction of covariant derivatives, which are standard forms for the field gradients. The case of gauge fields is also discussed.
- Received 13 June 1968
DOI:https://doi.org/10.1103/PhysRev.177.2247
©1969 American Physical Society
