Studying quantum spin systems through entanglement estimators (Articolo in rivista)

Type
Label
  • Studying quantum spin systems through entanglement estimators (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.93.167203 (literal)
Alternative label
  • Roscilde, T (1); Verrucchi, P (2); Fubini, A (2,3); Haas, S (2); Tognetti, V (2,3,4); (2004)
    Studying quantum spin systems through entanglement estimators
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Roscilde, T (1); Verrucchi, P (2); Fubini, A (2,3); Haas, S (2); Tognetti, V (2,3,4); (literal)
Pagina inizio
  • 167203 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://prl.aps.org/pdf/PRL/v93/i16/e167203 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 93 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 16 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1. Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA 2. Ist Nazl Fis Mat, UdR Firenze, I-50019 Sesto Fno, FI, Italy 3. Univ Florence, Dipartimento Fis, I-50019 Sesto Fno, FI, Italy 4. Ist Nazl Fis Nucl, Sez Firenze, I-50019 Sesto Fno, FI, Italy (literal)
Titolo
  • Studying quantum spin systems through entanglement estimators (literal)
Abstract
  • We study the field dependence of the entanglement of formation in anisotropic S=1/2 antiferromagnetic chains displaying a T=0 field-driven quantum phase transition. The analysis is carried out via quantum Monte Carlo simulations. At zero temperature the entanglement estimators show abrupt changes at and around criticality, vanishing below the critical field, in correspondence with an exactly factorized state, and then immediately recovering a finite value upon passing through the quantum phase transition. At the quantum-critical point, a deep minimum in the pairwise-to-global entanglement ratio shows that multispin entanglement is strongly enhanced; moreover this signature represents a novel way of detecting the quantum phase transition of the system, relying entirely on entanglement estimators. (literal)
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