Abstract
| Lingua originale | English |
|---|---|
| pagine (da-a) | 182-188 |
| Numero di pagine | 7 |
| Rivista | Europhysics Letters |
| Volume | 76 |
| Stato di pubblicazione | Published - 2006 |
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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; Liberti; Carollo, Angelo; Plastina.
In: Europhysics Letters, Vol. 76, 2006, pag. 182-188.Risultato della ricerca: Article
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TY - JOUR
T1 - Scaling of Berry's phase close to the Dicke quantum phase transition
AU - Carollo, Angelo
AU - Liberti, null
AU - Carollo, Angelo
AU - Plastina, null
PY - 2006
Y1 - 2006
N2 - 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
AB - 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
KW - Berry phase
KW - Quantum phase transition
UR - http://hdl.handle.net/10447/56107
M3 - Article
VL - 76
SP - 182
EP - 188
JO - Europhysics Letters
JF - Europhysics Letters
SN - 0295-5075
ER -