4 ms·
I don't know gauge theory and haven't read the link, but the Lagrangian also needs to be relativistically invariant. This is a global symmetry instead of a gaug
by danharaj 9y ago
I don't know gauge theory and haven't read the link, but the Lagrangian also needs to be relativistically invariant. This is a global symmetry instead of a gauge symmetry. I don't know if there's such a thing as, say, Euclidean gauge theory.
- zbyszek 9y agoThere is. A field theory in Minkowski space can be formulated in Euclidean space (and vice versa) with a technique called Wick rotation.