There are lots of other problems we can do by the “locally free” approximation, such as the ball rolling up the hill we mentioned,
There are lots of other problems we can do by the “locally free” approximation, such as the ball rolling up the hill we mentioned,
We do have to face up to the problem of the wave equation for the general U(x)… can’t quite be deduced but Schrödinger didn’t have much trouble guessing it,