The quantum-optics Hamiltonian in the Multipolar gauge
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-11076-5
Abstract: This article deals with the fundamental problem of light-matter interaction in the quantum theory. Although it is described through the vector potential in quantum electrodynamics, it is believed by some that a hamiltonian involving only… read more here.
Keywords: quantum; multipolar gauge; gauge; optics ... See more keywords
The gauge-invariant Lagrangian, the Power–Zienau–Woolley picture, and the choices of field momenta in nonrelativistic quantum electrodynamics
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DOI: 10.1038/s41598-021-94405-z
Abstract: We show that the Power-Zienau-Woolley picture of the electrodynamics of nonrelativistic neutral particles (atoms) can be derived from a gauge-invariant Lagrangian without making reference to any gauge whatsoever in the process. This equivalence is independent… read more here.
Keywords: woolley picture; field; electrodynamics; gauge invariant ... See more keywords