New posts in Dirac Equation

Is there an algebraic approach for the topological boundary (defect) states?

Dimension of Dirac $\gamma$ matrices

Why would Klein-Gordon describe spin-0 scalar field while Dirac describe spin-1/2?

Is Zitterbewegung an artefact of single-particle theory?

What was missing in Dirac's argument to come up with the modern interpretation of the positron?

How did Paul Dirac predict the existence of antiproton?

Why is it hard to extend the Feynman Checkerboard to more than 1+1 dimensions?