Eliminating unphysical photon components from Dirac-Maxwell Hamiltonian quantized in the Lorenz gauge

@article{Futakuchi2015EliminatingUP,
  title={Eliminating unphysical photon components from Dirac-Maxwell Hamiltonian quantized in the Lorenz gauge},
  author={Shinichiro Futakuchi and Kouta Usui},
  journal={arXiv: Mathematical Physics},
  year={2015}
}

Causality in quantum field theory with classical sources

In an exact quantum-mechanical framework we show that space-time expectation values of the second-quantized electromagnetic fields in the Coulomb gauge in the presence of a classical conserved source

non-symmetric Hamiltonians, and Gupta-Bleuler

The Gupta-Bleuler formalism for the Dirac-Maxwell model in the Lorenz gauge is investigated. A full description in detail will appear in [7].

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