General new-time formalism in the path integral
We describe a general method of applying point canonical transformations to the path integral followed by the corresponding new-time transformations aimed at reducing an arbitrary one-dimensional problem into an exactly solvable form. Our result is independent of operator-ordering ambiguities by construction. The method is used in getting the exact path-integral solutions of the Coulomb- and Morse-potential problems. © 1984 The American Physical Society.