Phase Transitions, Two-Level Atoms, and the A2 Term
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 1975
- DOI:
- 10.1103/PhysRevLett.35.432
- Bibcode:
- 1975PhRvL..35..432R