http://www.cnr.it/ontology/cnr/individuo/prodotto/ID178446
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
- 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
- Rivista
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- 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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