Problem 1.8 – Griffith’s Intro to QM

Problem 1.8

Suppose you add a constant to the potential energy (by “constant” I mean independent of as well as ). In classical mechanics this doesn’t change anything, but what about quantum mechanics? Show that the wave function picks up a time-dependent phase factor: . What effect does this have on the expectation value of a dynamical variable?

Solution:

Problem 1.8

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