# Why is it called Dirac point exactly?

April 27, 2022

April 27, 2022

Concepts used: Hamiltonian, eigenvalues, dispersion.

Some of my articles are using Dirac points:

- Dirac point in a photonic system (microcavity):
**Experimental investigation of a non-Abelian gauge field in 2D perovskite photonic platform** - Massless and massive Dirac Hamiltonians used in semiclassical equations of motion of a particle:
**Universal semiclassical equations based on the quantum metric for a two-band system** - Non-Hermiticity transforms a Dirac point into a pair of exceptional points:
**Experimental measurement of the divergent quantum metric of an exceptional point**