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Inconsistencies of a purported probability current in the Duffin-Kemmer-Petiau theory. (English) Zbl 1223.81092
Summary: The Duffin-Kemmer-Petiau (DKP) equation with a square step potential is used in a simple way with polymorphic purposes. It proves adequate to refuse a proposed new current that is currently interpreted as a probability current, to show that the Klein paradox does exist in the DKP theory and to revise other minor misconceptions diffused in the literature.

MSC:
81Q05 Closed and approximate solutions to the Schrödinger, Dirac, Klein-Gordon and other equations of quantum mechanics
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