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Bob Sciamanda wrote:
Forces are human inventions which help us model our
observations. However, quantum mechanical models are
not always simply understandable in terms of this concept.
As far as I remember, the central concept of QM is potential, V.
We must specify a potential function to write down the
Schroedinger equations for specific problems, for example,
Coulomb's potential in the case of the single hydrogen atom.
What prevents me from using F=-grad(V) and to think that
there is a force behind any smooth potential function?