What happens when two particles have a probability area that overlaps one another? Does it create temporarily in quantum foam a layer of particle reality?
You will have to be more specific with what you are asking. Probability area may overlap, but Hund’s rule prevents two elements from being in the same state at the same time. Could you describe in detail the circumstances your question applies to?
You get a probability of them interacting with each other, which depends on what the particles are. Except it’s not really that simple.
Do you mean two different particles? Two of the same particles? Fermions or bosons?