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Global charges as integrals over densities
For a conserved local current delta /sup mu /j/sub mu /(x)=0 it is shown that the matrix elements ( Psi , j/sub 0/(f/sub r/) Phi ) between localized states Psi and Phi of the smoothed integral integral j/sub 0/(x)f/sub r/(x)d/sup 4/x of the 'charge' density j/sub 0/(x) converge to the corr...
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Lenguaje: | eng |
Publicado: |
1972
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1007/BF02728884 http://cds.cern.ch/record/875642 |
Sumario: | For a conserved local current delta /sup mu /j/sub mu /(x)=0 it is shown that the matrix elements ( Psi , j/sub 0/(f/sub r/) Phi ) between localized states Psi and Phi of the smoothed integral integral j/sub 0/(x)f/sub r/(x)d/sup 4/x of the 'charge' density j/sub 0/(x) converge to the corresponding ones ( Psi , Q Phi ) of the associated global 'charge' Q whenever the latter exists, i.e. if the corresponding symmetry is not spontaneously broken. No assumptions about a gap in the energy-momentum spectrum are made. (10 refs). |
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