resolution: second quantization

Single “neutrinos” have no bound on the Hamiltonian

Dirac’s second quantization

But a strict discussion
requires a cut-off for every
orientation of p

In this case, however, the Hamiltonian is
periodic, therefore, there is another Fermi level at which a
negative-definite Hamiltonian, H_II acts, so

Previous slide

Next slide

Back to first slide

View graphic version