Giovanni Salesi

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Inserting the correct Lorentz factor into the definition of the 4-velocity v for spinning particles entails new kinematical properties for v. The wellknown constraint (identically true for scalar particles, but entering also the Dirac theory, and assumed a priori in all spinning particle models) pμv μ = m is here derived in a self-consistent way. (†) Work(More)
We start from the spinning electron theory by Barut and Zanghi, which has been recently translated into the Clifford algebra language. We “complete” such a translation, first of all, by expressing in the Clifford formalism a particular Barut–Zanghi (BZ) solution, which refers (at the classical limit) to an “internal” helical motion with a time–like speed(More)
Erasmo Recami Facoltà di Ingegneria, Università statale di Bergamo, Dalmine (BG), Italy; I.N.F.N.–Sezione di Milano, Milan, Italy; and D.M.O./FEEC and C.C.S., State University at Campinas, Campinas, S.P., Brazil; e-mail: Erasmo.Recami@mi.infn.it and Giovanni Salesi I.N.F.N.–Sezione di Milano, Milan, Italy; and Facoltà di Ingegneria, Università statale di(More)
In this paper we calculate the analytic expression of the phase time for the scattering of an electron off a complex square barrier. As is well known the (negative) imaginary part of the potential takes into account, phenomenologically, the absorption. We investigate the Hartman-Fletcher effect, and find that it is suppressed by the presence of a (not(More)
Erasmo Recami Facoltà di Ingegneria, Università statale di Bergamo, Dalmine (BG), Italy; I.N.F.N.–Sezione di Milano, Milan, Italy; and D.M.O./FEEC and C.C.S., State University at Campinas, Campinas, S.P., Brazil; e-mail: Erasmo.Recami@mi.infn.it and Giovanni Salesi I.N.F.N.–Sezione di Milano, Milan, Italy; and Facoltà di Ingegneria, Università statale di(More)
The recent literature shows a renewed interest, with various independent approaches, in the classical models for spin. Considering the possible interest of those results, at least for the electron case, we purpose in this paper to explore their physical and mathematical meaning, by the natural and powerful language of Clifford algebras (which, incidentally,(More)