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

  title={Noncovariant gauge fixing in the quantum Dirac field theory of atoms and molecules},
  author={Adam Oliver Stokes},
  journal={Physical Review A},
  • A. Stokes
  • Published 13 July 2012
  • Physics
  • Physical Review A
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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