I think it's a little bit different in this case. As physics has progressed, one of the things we've found is that the things that seem to actually exist in th

I think it's a little bit different in this case. As physics has progressed, one of the things we've found is that the things that seem to actually exist in the physical universe aren't necessarily directly observable. So the wavefunction of quantum mechanics is one of these "real" objects, but we can't see a wavefunction directly. It and collapses any time we measure it, and, to make matters even worse, it's a complex number --- how do you measure a complex number? We can infer the existence of the wavefunction based on various experiments, but we're never looking at it directly. The centrifugal force, by contrast, is more a consequence of a particular choice of reference frame. Whether it exists or not picks out certain reference frames as being special. But something like the wavefunction or magnetic potential is not directly observable in any reference frame. That said, one way in which the magnetic field is similar to the centrifugal force is that it is a direct consequence of special relativity. If you look at a stationary electron, you'll just see an electric field. But you can show that if you're looking at that electron in a moving reference frame, you'll see an extra force. We call that extra force the magnetic force.