Though those aren’t really proven real:
From that same Wikipedia article:
Although widely used, they are by no means a necessary feature of QFT, but rather are mathematical conveniences — as demonstrated by lattice field theory, which avoids using the concept altogether.[citation needed]
Though those aren’t really proven real: From that same Wikipedia article:
Getting back the the top question, if everything is a result of something, what started it all?
https://en.wikipedia.org/wiki/Unmoved_mover
https://bigthink.com/13-8/universe-quantum-fluctuation/