Coherent states of a relativistic particle in an external electromagnetic field
Vladislav G. Bagrov, I. L. Buchbinder, Dmitri M Gitman · Journal of Physics A Mathematical and General · 1976
The problem of the construction of coherent states of relativistic particles (bosons and fermions) in electromagnetic fields has been solved. The states discovered are exact solutions to the Klein-Gordon and Dirac equations; the wavefunctions of the particles are found in the homogeneous magnetic and electric fields and the Redmond configuration field, as well as in the plane-wave field. The formulation of relativistic quantum mechanics is used on the 'null' plane.