A geometrical derivation of the Dirac equation

Details A geometrical derivation of the Dirac equation A geometrical derivation of the Dirac equation

2002-10-31

arxiv.org/abs/hep-th/0211002v2

Phys.Lett. A309 (2003) 335-339

Physics

High Energy Physics

High Energy Physics - Theory

9 pages, LaTeX, version accepted for publication in Phys. Lett. A

Scientific paper

10.1016/S0375-9601(03)00210-X

We give a geometrical derivation of the Dirac equation by considering a spin-1/2 particle travelling with the speed of light in a cubic spacetime lattice. The mass of the particle acts to flip the multi-component wavefunction at the lattice sites. Starting with a difference equation for the case of one spatial and one time dimensions, we generalize the approach to higher dimensions. Interactions with external electromagnetic and gravitational fields are also considered. One logical interpretation is that only at the lattice sites is the spin-1/2 particle aware of its mass and the presence of external fields.

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