Internal Symmetry Group and Density Matrix of Fields with Spins 0, 1

Details Internal Symmetry Group and Density Matrix of Fields with Spins 0, 1 Internal Symmetry Group and Density Matrix of Fields with Spins 0, 1

2001-10-06

arxiv.org/abs/quant-ph/0110042v1

Hadronic J.24:167-185,2001

Physics

Quantum Physics

15 pages, LaTeX

Scientific paper

The internal symmetry group U(3,1) of the neutral vector fields with two spins 0 and 1 is investigated. Massless fields correspond to the generalized Maxwell equations with the gradient term. The symmetry transformations in the coordinate space are integro-differential transformations. Using the method of the Hamiltonian formalism the conservation tensors are found, and the quantized theory is studied. The necessity to introduce an indefinite metric is shown. The internal symmetry group U(3,1) being considered, after the transition to electrodynamics, reduces to the U(2) group. It is shown that the group of dual transformations is the subgroup of the group under consideration. All the linearly independent solutions of the equation for a free particle obtained in terms of the projection matrix-dyads.

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