Abstract
The Wick rotation is generalized in a covariant manner so as to apply to curved manifolds in a way that is independent of the analytic properties of the manifold. This enables us to show that various methods for defining a Feynman propagator to be found in the literature are equivalent where they are applicable. We are also able to discuss the relation between certain regularization methods that have been employed.
- Received 7 July 1976
DOI:https://doi.org/10.1103/PhysRevD.15.1494
©1977 American Physical Society
