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[Mentor's note - this thread was split off from https://www.physicsforums.com/threads/a-skeptics-view-on-bohmian-mechanics.899967/ as it is interesting in its own right and a digression there]
This is a distortion of facts. One looks at lattice QCD only because it is derived from the Poincare invariant QCD; without the latter there would be no motivation at all to consider the former. And lattice QED is hardly ever pursued. The successes of QED, both historically and today, come solely from the Poincare invariant version.atyy said:If we take the Wilsonian view of QFT (in the Copenhagen interpretation), then QED should be thought of as conceptually arising from a non-relativistic quantum mechanical system such as lattice QED.
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