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Clifford Algebras and their Applications in Mathematical Physics - Volume 1: Algebra and Physics (Paperback, Softcover reprint of the original 1st ed. 2000)
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Clifford Algebras and their Applications in Mathematical Physics - Volume 1: Algebra and Physics (Paperback, Softcover reprint of the original 1st ed. 2000)
Series: Progress in Mathematical Physics, 18
Expected to ship within 10 - 15 working days
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The plausible relativistic physical variables describing a
spinning, charged and massive particle are, besides the charge
itself, its Minkowski (four) po sition X, its relativistic linear
(four) momentum P and also its so-called Lorentz (four) angular
momentum E # 0, the latter forming four trans lation invariant part
of its total angular (four) momentum M. Expressing these variables
in terms of Poincare covariant real valued functions defined on an
extended relativistic phase space [2, 7J means that the mutual Pois
son bracket relations among the total angular momentum functions
Mab and the linear momentum functions pa have to represent the
commutation relations of the Poincare algebra. On any such an
extended relativistic phase space, as shown by Zakrzewski [2, 7],
the (natural?) Poisson bracket relations (1. 1) imply that for the
splitting of the total angular momentum into its orbital and its
spin part (1. 2) one necessarily obtains (1. 3) On the other hand
it is always possible to shift (translate) the commuting (see (1.
1)) four position xa by a four vector ~Xa (1. 4) so that the total
angular four momentum splits instead into a new orbital and a new
(Pauli-Lubanski) spin part (1. 5) in such a way that (1. 6)
However, as proved by Zakrzewski [2, 7J, the so-defined new shifted
four a position functions X must fulfill the following Poisson
bracket relations: (1.
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