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Phase operator and phase transition in a classical Dicke model: J. P. Provost, F. Rocca, and G. Vallee, Physique Théorique, Université de Nice, France

Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
88 KB
Volume
106
Category
Article
ISSN
0003-4916

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✦ Synopsis

We study the thermodynamical property of a Dicke model with classical spin. As in the quantum case, the model exhibits a phase transition associated with the spontaneous breaking of the gauge symmetry. We calculate the thermodynamical equilibrium photon state in a relatively simple way both at any temperature and in the presence of an external field. We emphasize that the phase transition is connected with the existence of an observable phase operator below the critical temperature. Some Calculations for I'C in the N-Particle Model.

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Phase operator and phase transition in a classical Dicke model
✍ J.P Provost; F Rocca; G Vallee 📂 Article 📅 1977 🏛 Elsevier Science 🌐 English ⚖ 988 KB

We study the thermodynamical properties of a Dicke model with classical spins. As in the quantum case, the model exhibits a phase transition associated with the spontaneous breaking of the gauge symmetry. We calculate the thermodynamical equilibrium photon state in a relatively simple way both at an