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Nov 22, 2019 at 10:10 comment added GiorgioP-DoomsdayClockIsAt-90 It is not true that the problem is in the fact that forces depend on position. The non relativistic Schrödinger equation provides an accurate description of the properties of all the light atoms even though the potential energy term is a function of the position. It's the passages from a position-dependent interaction to the observables which is peculiar and makes the difference with classical physics.
Nov 22, 2019 at 9:49 comment added user68014 Yes that is the right theory. You certainly can understand it though and I would encourage you to try. As you've just figured out QM has a lot of consequences and challenges our whole perception of reality so you can't really afford to just look the other way :) Start with Leonard Susskind's Theoretical Minimum book.
Nov 22, 2019 at 9:43 vote accept abouttostart
Nov 22, 2019 at 9:42 comment added abouttostart Yes. I just googled it and found that it is quantum electrodynamics, largely contributed by Richard Feynman (according to Wikipedia). I just gave up understanding this as I realised that it's not the kind of thing that I can understand. Thanks to your and the others' answers, I at least clarified that there somehow is a way to deal with such interactions in terms of quantum mechanics, which is a good thing.
Nov 22, 2019 at 8:29 history answered user68014 CC BY-SA 4.0