Quantum Mechanics · Chapter 24

Path integrals

Feynman’s reformulation: the amplitude to go from one place to another is a sum over every path between them, each weighted by the phase its classical action gives. The propagator, time slicing, the sum over histories, the classical limit by stationary phase, the free particle and the oscillator done exactly, and what the method is for.

Feynman’s reformulation: the amplitude to go from one place to another is a sum over every path between them, each weighted by the phase its classical action gives. The propagator, time slicing, the sum over histories, the classical limit by stationary phase, the free particle and the oscillator done exactly, and what the method is for.