# Dirac's Coupling to an electromagnetic field and schroedingers

hi
i just read this article,which discussed about getting the Schroedinger's equation for a particle in a em field by transforming the psi, http://www.vttoth.com/gauge.htm .can anyone plz tell me if we can get the dirac's equation for a particle in a em field by transforming the psi
regards
bashyam govindhan

dextercioby
Homework Helper
As far as I know, the same calculations can be made for the Dirac Hamiltonian.

Meir Achuz