Phase diffusion of a q-deformed oscillator

Turan Birol, Özgür Esat Müstecaplioǧlu

Research output: Contribution to journalArticle

1 Scopus citations


We examine the problem of phase diffusion rate in a U(1) global phase symmetry broken system, from the perspective of q-deformed oscillators where the deformation parameter represents the anharmonicity. It is shown that broken phase symmetry states, described by deformed coherent states, suffer phase diffusion at a rate determined by the deformation parameter. Analytical discussions are given for the case of weak deformations, while detailed numerical results are presented when strong anharmonicity is present in the system.

Original languageEnglish (US)
Pages (from-to)240-251
Number of pages12
Issue number2
StatePublished - Dec 2009


  • Phase diffusion
  • Q-deformed oscillator
  • Symmetry breaking

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