The Stückelberg formalism is a field-enlarging transformation
Abstract
Description
It is shown that the Stückelberg formalism can be regarded as a field-enlarging transformation that introduces an additional gauge symmetry to the considered model. The appropriate BRST charge can be defined. The physical state condition, demanding that that a physical state is to be anihilated by the BRST charge, is shown to be equivalent to the Stückelberg condition. Several applications of the new approach to the formalism are presented. The comparison with the BFV procedure is given. (The author field has been corrected.)
16 pages, LaTeX-file
16 pages, LaTeX-file