Abstract
With Lagrangian quantum field theory as a starting point, the general quantum transition amplitude is derived as a sum of action exponentials over all paths connecting the initial and final fermion states. For bookkeeping convenience in intermediate stages anticommuting parameters are introduced. All integrals are determined by completeness and unitarity. Grassmann calculus is not postulated.
- Received 9 February 1988
DOI:https://doi.org/10.1103/PhysRevD.37.2990
©1988 American Physical Society
