Fisher information, Rényi entropy power and quantum phase transition in the Dicke model

Á Nagy, E. Romera

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Fisher information, Rényi entropy power and FisherRényi information product are presented for the Dicke model. There is a quantum phase transition in this quantum optical model. It is pointed out that there is an abrupt change in the Fisher information, Rényi entropy power, the Fisher, Shannon and Rényi lengths at the transition point. It is found that these quantities diverge as the characteristic length:

Original languageEnglish
Pages (from-to)3650-3655
Number of pages6
JournalPhysica A: Statistical Mechanics and its Applications
Volume391
Issue number13
DOIs
Publication statusPublished - Jul 1 2012

Keywords

  • Dicke model
  • Fisher information
  • Fisher-Rényi information product
  • Quantum phase transition

ASJC Scopus subject areas

  • Statistics and Probability
  • Condensed Matter Physics

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