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- W3100791284 abstract "In this brief article we discuss spin polarization operators and spin polarization states of 2+1 massive Dirac fermions and find a convenient representation by the help of 4-spinors for their description. We stress that in particular the use of such a representation allows us to introduce the conserved covariant spin operator in the 2+1 field theory. Another advantage of this representation is related to the pseudoclassical limit of the theory. Indeed, quantization of the pseudoclassical model of a spinning particle in 2+1 dimensions leads to the 4-spinor representation as the adequate realization of the operator algebra, where the corresponding operator of a first-class constraint, which cannot be gauged out by imposing the gauge condition, is just the covariant operator previously introduced in the quantum theory." @default.
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- W3100791284 date "2005-02-01" @default.
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- W3100791284 title "Comments on spin operators and spin-polarization states of 2 + 1 fermions" @default.
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- W3100791284 doi "https://doi.org/10.1140/epjc/s2004-02026-9" @default.
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