Quantum phase transition in spin systems studied through entanglement estimators (Articolo in rivista)

Type
Label
  • Quantum phase transition in spin systems studied through entanglement estimators (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s11080-006-9014-2 (literal)
Alternative label
  • Fubini, A; Haas, S; Roscilde, T; Tognetti, V; Verrucchi, P (2006)
    Quantum phase transition in spin systems studied through entanglement estimators
    in Open systems & information dynamics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Fubini, A; Haas, S; Roscilde, T; Tognetti, V; Verrucchi, P (literal)
Pagina inizio
  • 445 (literal)
Pagina fine
  • 453 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.springerlink.com/content/4hh35l783h278626/?MUD=MP (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 13 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Florence, Dip Fis, I-50019 Sesto Fiorentino, FI, Italy; INFM, MATIS, I-95125 Catania, Italy; Catania Univ, Dipartimento Metodol Fis & Chim, I-95125 Catania, Italy; Univ So Calif, Dept Phys & Astron, Los Angeles, CA 90089 USA; Sez Firenze, INFM, CNR, Ist Nazl Fis Materia, I-50019 Sesto Fiorentino, FI, Italy (literal)
Titolo
  • Quantum phase transition in spin systems studied through entanglement estimators (literal)
Abstract
  • Entanglement represents purely quantum effect involving two or more particles. Spin systems are good candidates for studying this effect and its relation with other collective phenomena ruled by quantum mechanics. While the presence of entangled states can be easily verified, the quantitative estimate of this property is still under investigation. One of the most useful tools in this framework is the concurrence whose definition, albeit limited to S = 1/2 systems, can be related to the correlators. We consider quantum spin systems defined along chains and square lattices, and described by Heisenberg-like Hamiltonians: our goal is to clarify the relation between entanglement and quantum phase transitions, as well as that between the concurrence the and the specific quantum state of the system. (literal)
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