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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.

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