Spin- 3/2 beyond the Rarita-Schwinger framework Article uri icon

abstract

  • We employ the two independent Casimir operators of the Poincaré group, the squared four-momentum, p2, and the squared Pauli-Lubanski vector, W2, in the construction of a covariant mass m, and spin-3/2 projector in the four-vector spinor, ψμ. This projector provides the basis for the construction of an interacting Lagrangian that describes a causally propagating spin-3/2 particle coupled to the electromagnetic field by a gyromagnetic ratio of g3/2=2. © Società Italiana di Fisica and Springer-Verlag 2006.

publication date

  • 2006-01-01