Single-site entanglement at the superconductor-insulator transition in the Hirsch model (Articolo in rivista)

Type
Label
  • Single-site entanglement at the superconductor-insulator transition in the Hirsch model (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhyRevB.73.085113 (literal)
Alternative label
  • Anfossi, A.; Boschi, C.D.E.; Montorsi, A.; Ortolani, F. (2006)
    Single-site entanglement at the superconductor-insulator transition in the Hirsch model
    in Physical review. B, Condensed matter and materials physics; APS, American physical society, College Park, MD (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Anfossi, A.; Boschi, C.D.E.; Montorsi, A.; Ortolani, F. (literal)
Pagina inizio
  • 085113-1 (literal)
Pagina fine
  • 085113-5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 8 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
  • Google Scholar (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Fisica del Politecnico, C.so Duca degli Abruzzi, 24, I-10129, Torino, Italy CNR-INFM, Unità di Ricerca di Bologna, V.le Berti-Pichat, 6/2, I-40127, Bologna, Italy Dipartimento di Fisica dell'Università di Bologna, INFN, Via Irnerio, 46, I-40126, Bologna, Italy (literal)
Titolo
  • Single-site entanglement at the superconductor-insulator transition in the Hirsch model (literal)
Abstract
  • We investigate the transition to the insulating state in the one-dimensional Hubbard model with bond-charge interaction x (Hirsch model), at half-filling and T=0. By means of the density-matrix renormalization group algorithm the charge gap closure is examined by both standard finite-size scaling analysis and looking at singularities in the derivatives of single-site entanglement. The results of the two techniques show that a quantum phase transition takes place at a finite Coulomb interaction u(c)(x) for x greater than or similar to 0.5. The region 0 < u < u(c) turns out to have a superconducting nature, at least for not too large x > x(c). (literal)
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