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arXiv · 1610.08051

Thermodynamics and Superradiant Phase Transitions in a three-level Dicke Model

Mathias Hayn·Tobias Brandes
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Abstract

We analyse the thermodynamic properties of a generalised Dicke model, i.e. a collection of three-level systems interacting with two bosonic modes. We show that at finite temperatures the system undergoes first-order phase transitions only, which is in contrast to the zero-temperature case where a second-order phase transition exist as well. We discuss the free energy and prominent expectation values. The limit of vanishing temperature is discussed as well.

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Mathias Hayn, Tobias Brandes. 2016-10-25. Thermodynamics and Superradiant Phase Transitions in a three-level Dicke Model. https://doi.org/10.1103/physreve.95.012153

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