Does it make sense to say that the processes represented by Feynman diagrams and path integrals (like beta decay) are “real?” If you want to say in what sense they are or are not real, please respond!
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I mean, can you think of any mathematical idea that isn't degenerate, without a different method to get the same result? I can't. So why would any mathematical description of physics ever be unique? It makes sense to me to look for answers in a different conceptual level, then.
That’s true! But hopefully those equivalent mathematical descriptions can give rise to different physical predictions somehow.
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That's a hope, but why would they? At some point the descriptions end up being mathematically equivalent, don't they? Happens all the time in math! I don't put any hopes on experiments discerning what's the One True Way past some point. I'm not sure we're there yet, though.
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Yes you’re right .. I suppose I should have said mathematically equivalilent in the ‘classical’ limit .. like how GR was to Newtonian gravity
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