Elimination of the A-square problem from cavity QED

A. Vukics, Tobias Grießer, P. Domokos

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

We generalize the Power-Zineau-Woolley transformation to obtain a canonical Hamiltonian of cavity quantum electrodynamics for arbitrary geometry of boundaries. This Hamiltonian is free from the A-square term and the instantaneous Coulomb interaction between distinct atoms. The single-mode models of cavity QED (Dicke, Tavis-Cummings, Jaynes-Cummings) are justified by a term by term mapping to the proposed microscopic Hamiltonian. As one straightforward consequence, the basis of no-go argumentations concerning the Dicke phase transition with atoms in electromagnetic fields dissolves.

Original languageEnglish
Article number073601
JournalPhysical Review Letters
Volume112
Issue number7
DOIs
Publication statusPublished - Feb 20 2014

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elimination
cavities
quantum electrodynamics
atoms
electromagnetic fields
geometry
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Elimination of the A-square problem from cavity QED. / Vukics, A.; Grießer, Tobias; Domokos, P.

In: Physical Review Letters, Vol. 112, No. 7, 073601, 20.02.2014.

Research output: Contribution to journalArticle

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