Fermi point

The term Fermi point has two applications but refers to the same phenomena (special relativity):

• Fermi point (quantum field theory)
• Fermi point (nanotechnology)

For both applications count that the symmetry between particles and anti-particles in weak interactions is violated:
At this point the particle energy E = cp is zero.
In nanotechnology this concept can be applied to electron behavior. An electron as a single particle is a fermion obeying the Pauli exclusion principle.