Conserved currents of the Klein–Gordon field
1981 ◽
Vol 90
(3)
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pp. 507-515
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AbstractA method is presented whereby all locally defined conserved currents of the Klein-Gordon field are found. The mathematical background to the method includes a generalization of the Poincaré lemma of the calculus of exterior differential forms. It is found that the only conserved currents are essentially a countably infinite set of functions, bilinear in the field, together with a single current in the case where the mass is zero. The usual energy-momentum tensor is included amongst these functions. The method does not depend on the use of any canonical formulation of the field theory.
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1996 ◽
Vol 11
(31)
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pp. 5479-5493
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2006 ◽
Vol 21
(17)
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pp. 3641-3647
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1998 ◽
Vol 511
(3)
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pp. 737-759
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