I am just seeing if we are on the same page. If there is a quantum field, then would you agree that a singularity can spontaneously form?
Why would I agree to that? Have YOU seen a singularity pop out of the quantum field? No, the only thing we see is energy converting to matter (a “virtual particle”) for a fraction of a second and then dissipating back into energy. That’s the only thing we see happening in the quantum field.
Would you also agree that a quantum field could have existed prior to the beginning of our universe?
Dude, the quantum field traverses spacetime. There’s no meaning to the phrase “quantum field” without spacetime, because it is a space-time field. What do you think the “field” in quantum “field” refers to? It’s talking about the abstract set of coordinates, or something like that, that we can set across spacetime. That’s what a field is in physics.