| Revision as of 11:27, 2 January 2006 editMpatel (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers13,500 editsm global symmetry doesn't just apply to QFT← Previous edit | Revision as of 11:27, 2 January 2006 edit undoMpatel (talk | contribs)Autopatrolled, Extended confirmed users, Pending changes reviewers13,500 editsNo edit summaryNext edit → | ||
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| In ], a global symmetry is any symmetry of a model which is not a ]. 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. | In ], a global symmetry is any symmetry of a model which is not a ]. 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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Revision as of 11:27, 2 January 2006
A global symmetry is a symmetry that holds for all points in the spacetime under consideration.
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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