- Autor(in)
- Referenz
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1 T. D. Newton and E. P. Wigner, Rev. mod. Physics 21, 400 (1949).
2 S. Schweber, Introduction to Relativistic Quantum Field Theory, New York 1961, ch. 3.
3 P. A. Dirac, The principles of Quantum Mechanics, 4th ed. ch. 3. Oxford, Clarendon 1958.
4 F. Oberhettinger, Tabellen zur Fourier Transformation. Berlin 1957, p. 117.
5 N. N. Bogolubov and D. V. Shirkow, Introduction to the Theory of Quantized Fields 1957,
- Seitenbereich
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0060 - 0063
- Zusammenfsg.
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In 1949 Newton and Wigner have obtained a non-covariant coordinate <i>q</i> of the scalar particle on the basis of some postulates. It is shown that the ordinary coordinate <i>x</i> satisfies all physical and mathematical requirements underlying their postulates if the definition (3) (see below) of the probability density in the <I>x</I>-space is used. Therefore from the point of view of these requirements the coordinate <i>x</i> is in no way worse than the coordinate <i>q</i>. Only the requirement that the position operator must be hermitian is crucial for rejecting the <I>x</I>-coordinate.
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