The Dirac equation is a relativistic wave equation. In its simplest form, it is written as: \[ (i\hbar\gamma^\mu\partial_\mu - mc)\psi = 0 \] where: - \( \hbar \) is the reduced Planck's constant, - \( \gamma^\mu \) are the Dirac matrices, - \( \partial_\mu \) is the four-gradient, - \( m \) is the mass of the particle, - \( c \) is the speed of light, - \( \psi \) is the wavefunction.
