Incredibly, this idea led him to predict the existence of the positron, discovered five years later. Dirac's equation can no longer be considered mysterious, given its central position in modern ...

Fermions are just one of the basic categories of particles, and almost all of them are Dirac, meaning they have a complementary and distinctive antiparticle—think electron and positron.

Quantum field theory marries the ideas of other quantum theories to depict all particles as “excitations” that arise in underlying fields. The British physicist Paul Dirac started the ball ...