Polarized Dirac fermions in de Sitter spacetime

Details Polarized Dirac fermions in de Sitter spacetime Polarized Dirac fermions in de Sitter spacetime

2001-09-25

arxiv.org/abs/hep-th/0109199v1

Phys.Rev. D65 (2002) 084008

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, LaTeX w AMS symb

Scientific paper

10.1103/PhysRevD.65.084008

The tetrad gauge invariant theory of the free Dirac field in two special moving charts of the de Sitter spacetime is investigated pointing out the operators that commute with the Dirac one. These are the generators of the symmetry transformations corresponding to isometries that give rise to conserved quantities according to the Noether theorem. With their help the plane wave spinor solutions of the Dirac equation with given momentum and helicity are derived and the final form of the quantum Dirac field is established. It is shown that the canonical quantization leads to a correct physical interpretation of the massive or massless fermion quantum fields.

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