Dirac theory

Dirac theory

[di′rak ′thē·ə·rē]
(quantum mechanics)
Theory of the electron based on the Dirac equation, which accounts for its spin angular momentum and gives its magnetic moment and its behavior in an electromagnetic field (except for higher-order corrections). Also known as Dirac electron theory.
References in periodicals archive ?
Here Dyson elaborates on his ground-breaking articles, "The radiation theories of Tomonaga, Schwinger and Feynman" and "The S matrix in quantum electrodynamics," working through the Dirac theory, scattering problems and born approximation, field theory, examples of quantized field theories, free particle scattering problems, the general theory of free particle scattering, and scattering by a static potential with a comparison to experimental results.
So the onset radius for electron-position pair production is an important parameter in the Dirac theory of the electron.
The interaction involves both the charge of the particle and its magnetic moment resulting from its spin magnetic moment (SMM) derived from the Dirac theory and the quanta of the 4-vector electromagnetic field are spin 1 photons.
In the Dirac theory the Darwin term has to be introduced separately for l = 0 states, whereas in our model [E.