Quantum fields have gauge symmetry so they do not have any definite values, you can assume them to have more or less any value as long as you are consistent. My

Quantum fields have gauge symmetry so they do not have any definite values, you can assume them to have more or less any value as long as you are consistent. My views on this topic are heavily influenced by Nima Arkani-Hamed and here [1] are 30 seconds from a lecture where he is very explicit about this. But I am aware that this is not really a topic with universal agreement, at least this is what it looks to a non-physicist like me. And looking at your user profile I am pretty sure you are going to tell me that I am asking for to much realism. [1] https://www.youtube.com/watch?v=tnA7bh7dTqY&t=1669 https://www.youtube.com/watch?v=tnA7bh7dTqY&t=1669