Is There a Connection Between Quantum Field Theory and Entanglement?

In the real world, we have to a very good approximation the world is run by what we call quantum field theory. Even in empty space, there are still fields there. We can quantify the amount of entanglement between different pieces of the wave function. And then rather than saying, the more distance, the less entanglement, you turn that on its head. You say, look, i know what the entanglement is. Let me assume, let me put out there, as in anzats, it's when theEntanglement is strong and short. It's also called 'theory of entangled states' - but this isn't quite right either. So with