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Physical Review Letters

Phase Transitions, Two-Level Atoms, and the A 2 Term

Kazimierz Rza̧żewski, K. Wódkiewicz, W. Żakowicz

Published Aug 18, 1975• 311 citations
Publisher

Abstract

We show that the presence of the recently discovered phase transition in the Dicke Hamiltonian is due entirely to the absence of the A2 terms from the interaction Hamiltonian.Received 11 June 1975DOI:https://doi.org/10.1103/PhysRevLett.35.432©1975 American Physical Society

DOI
10.1103/physrevlett.35.432

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We show that the presence of the recently discovered phase transition in the Dicke Hamiltonian is due entirely to the absence of the A2 terms from the interaction Hamiltonian.Received 11 June 1975DOI:https://doi.org/10.1103/PhysRevLett.35.432©1975 American Physical Society