In physics, a Dirac fermion is a fermion which is not its own antiparticle. The vast majority of particles fall under this category, as they are not their own antiparticles, and in particle physics all fermions in the standard model, except possibly neutrinos, are Dirac fermions. They are named for Paul Dirac, and can be modeled with the Dirac equation.
- Dirac spinor, a wavefunction-like description of a Dirac fermion
- Spinor, mathematical details
- Dirac sea, a conceptual metaphor
- Graphene, the worlds first 2D "miracle" material
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