Scaling of Berry's phase close to the Dicke quantum phase transition

Angelo Carollo, Angelo Carollo, Plastina, Liberti

Risultato della ricerca: Article

36 Citazioni (Scopus)

Abstract

We discuss the thermodynamic and finite-size scaling properties of the geometric phase in the adiabatic Dicke model, describing a quantum phase transition for an N qubit register coupled to a slow oscillator mode. We show that, in the thermodynamic limit, a non-zero Berry phase is obtained only if a path in parameter space is followed that encircles the critical point. Furthermore, we investigate the precursors of this critical behavior for a system with finite size and obtain the leading orders in the 1/N expansion of the Berry phase and its critical exponent
Lingua originaleEnglish
pagine (da-a)182-188
Numero di pagine7
RivistaEurophysics Letters
Volume76
Stato di pubblicazionePublished - 2006

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scaling
thermodynamics
registers
critical point
oscillators
exponents
expansion

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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Scaling of Berry's phase close to the Dicke quantum phase transition. / Carollo, Angelo; Carollo, Angelo; Plastina; Liberti.

In: Europhysics Letters, Vol. 76, 2006, pag. 182-188.

Risultato della ricerca: Article

Carollo, A, Carollo, A, Plastina & Liberti 2006, 'Scaling of Berry's phase close to the Dicke quantum phase transition', Europhysics Letters, vol. 76, pagg. 182-188.
Carollo, Angelo ; Carollo, Angelo ; Plastina ; Liberti. / Scaling of Berry's phase close to the Dicke quantum phase transition. In: Europhysics Letters. 2006 ; Vol. 76. pagg. 182-188.
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