# Noncovariant gauge fixing in the quantum Dirac field theory of atoms and molecules

@article{Stokes2012NoncovariantGF, title={Noncovariant gauge fixing in the quantum Dirac field theory of atoms and molecules}, author={Adam Oliver Stokes}, journal={Physical Review A}, year={2012}, volume={86}, pages={012511} }

Starting from the Weyl gauge formulation of quantum electrodynamics (QED), the formalism of quantum-mechanical gauge fixing is extended using techniques from nonrelativistic QED. This involves expressing the redundant gauge degrees of freedom through an arbitrary functional of the gauge-invariant transverse degrees of freedom. Particular choices of functional can be made to yield the Coulomb gauge and Poincar\'e gauge representations. The Hamiltonian we derive therefore serves as a good…

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