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Revision as of 11:20, 5 December 2005 by Conscious (talk | contribs) (WP:WSS)(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)In quantum field theory, a global symmetry is any symmetry of a model which is not a gauge symmetry. A gauge symmetry is a symmetry which only allows us to predict the future evolution of a state given its current state up to a gauge transformation. So, a global symmetry is any symmetry, which acting upon any state, never acts to leave the current state invariant but yet changes the future or past state simultaneously.
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