Kovariante Dichten. Probleme der Makrokausalität und Teilchendichte in der relativistischen Wellenmechanik. I



We consider signals represented by skalar particle densities ϱ. It is then proven that the assumptions (i) ϱ ≥ s° (ii) ϱ = s0 is the fourth component of a four-vector sμ (iii) the scalar particles form a repesentation of the POINCARÉ group in HILBERT space, are incompatible with experimental data (formfactors of pions).