QUANTUM DISCORD IN A SPIN SYSTEM WITH SYMMETRY BREAKING (Articolo in rivista)

Type
Label
  • QUANTUM DISCORD IN A SPIN SYSTEM WITH SYMMETRY BREAKING (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1142/S0217979212430023 (literal)
Alternative label
  • Tomasello, Bruno; Rossini, Davide; Hamma, Alioscia; Amico, Luigi (2012)
    QUANTUM DISCORD IN A SPIN SYSTEM WITH SYMMETRY BREAKING
    in International journal of modern physics b
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Tomasello, Bruno; Rossini, Davide; Hamma, Alioscia; Amico, Luigi (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 26 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 17 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 27-28 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • MATIS INFM CNR; Dipartimento Fis & Astron; University of Kent; STFC Rutherford Appleton Laboratory; Scuola Normale Superiore di Pisa; Consiglio Nazionale delle Ricerche (CNR)NANO; Perimeter Institute for Theoretical Physics (literal)
Titolo
  • QUANTUM DISCORD IN A SPIN SYSTEM WITH SYMMETRY BREAKING (literal)
Abstract
  • We analyze the quantum discord Q throughout the low temperature phase diagram of the quantum XY model in transverse field. We first focus on the T = 0 order-disorder quantum phase transition QPT both in the symmetric ground state and in the symmetry broken one. Beside it, we highlight how Q displays clear anomalies also at a noncritical value of the control parameter inside the ordered phase, where the ground state is completely factorized. We evidence how the phenomenon is in fact of collective nature and displays universal features. We also study Q at finite temperature. We show that, close to the QPT, Q exhibits quantum-classical crossover of the system with universal scaling behavior. We evidence a nontrivial pattern of thermal correlations resulting from the factorization phenomenon. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it