Abstract: Newton and Wigner have previously discussed the definition of "localized states" in terms of invariance conditions. However, their localization conditions are not Lorentz covariant. The present work presents a modified set of invariance postulates which includes a Lorentz invariance condition. It is shown that for spinless systems there do exist states satisfying the modified set of postulates; these states are calculated explicitly. The procedure appears to preclude the existence of Lorentz covariant "position operators."
Publication Year: 1964
Publication Date: 1964-11-09
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 42
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