Using a set of gauge-invariant variational trial wave functionals, we investigate the nature of the (2+1)-dimensional QED ground state. Our variational treatment is a refinement of the usual one-loop calculation. We find that for massive fermions the state with a constant magnetic field lies below the perturbative ground state. Finally, we use our method to study the massless Dirac equation in an external magnetic field.
No takes yet. Share an insight, caveat, or question.
Paolo Cea (1985) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: