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Dicke Transition in Open Many-Body Systems Determined by Fluctuation Effects

Alla V Bezvershenko1, Catalin-Mihai Halati2, Ameneh Sheikhan2

  • 1Institute for Theoretical Physics, University of Cologne, 50937 Cologne, Germany.

Physical Review Letters
|November 5, 2021
PubMed
Summary

We present a new method to study the Dicke transition in many-particle systems coupled to a cavity. Fluctuations beyond mean-field theory reveal universal properties and the thermal nature of the transition.

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