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- W2022985388 abstract "The Rényi entropies of the Dicke model are presented. This quantum-optical model describes a single-mode bosonic field interacting with an ensemble of N two-level atoms. There is a quantum phase transition in the N→∞ limit. It is shown that there is an abrupt change in the Rényi entropy of order β at the transition point. Around the critical value of the coupling strength λc the Rényi entropy is proportional to the logarithm of the characteristic length and diverges as ln|λc−λ| for any order β. The pseudocapacity defined here in analogy with the heat capacity exhibits the phase transition. The critical exponent for the Dicke model is found to be 1 for any value of the parameter β." @default.
- W2022985388 created "2016-06-24" @default.
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- W2022985388 date "2011-08-01" @default.
- W2022985388 modified "2023-09-26" @default.
- W2022985388 title "Rényi entropy and quantum phase transition in the Dicke model" @default.
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- W2022985388 doi "https://doi.org/10.1016/j.physleta.2011.06.046" @default.
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