Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-01-31
Physics
High Energy Physics
High Energy Physics - Theory
RevTeX4, 5 pages; Part of the results was presented on the 12th National Conference on Nuclear Physics of China in April 2004
Scientific paper
The missed particle-antiparticle degrees of freedom are retrieved and the corresponding particle-antiparticle intrinsic space are introduced to study the dynamical symmetry of the Dirac particle. As a result, the particle-antiparticle quantum number appears naturally and the Dirac particle has five quantum numbers instead of four. An anti-symmetry (different from the conventional symmetry) of the Dirac Hamiltonian and a dual symmetry of its eigenfunctions are explored. The $\hat{\kappa}$ operator of the Dirac equation in central potentials is found to be the analog of the helicity operator of the free particle--the alignment of the spin along the angular momentum.
Pauli Hans-Christian
Wang Shun-Jin
Zhou Shan-Gui
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