Fermionic entanglement in the Lipkin model
| cic.isFulltext | true | es |
| cic.isPeerReviewed | true | es |
| cic.lugarDesarrollo | Universidad Nacional de La Plata | es |
| cic.version | info:eu-repo/semantics/submittedVersion | es |
| dc.date.accessioned | 2021-06-10T15:02:13Z | |
| dc.date.available | 2021-06-10T15:02:13Z | |
| dc.identifier.uri | https://digital.cic.gba.gob.ar/handle/11746/10969 | |
| dc.title | Fermionic entanglement in the Lipkin model | en |
| dc.type | Artículo | es |
| dcterms.abstract | We examine the fermionic entanglement in the ground state of the fermionic Lipkin model and its relation with bipartite entanglement. It is first shown that the one-body entanglement entropy, which quantifies the minimum distance to a fermionic Gaussian state, behaves similarly to the mean-field order parameter and is essentially proportional to the total bipartite entanglement between the upper and lower modes, a quantity meaningful only in the fermionic realization of the model. We also analyze the entanglement of the reduced state of four single-particle modes (two up-down pairs), showing that its fermionic concurrence is strongly peaked at the phase transition and behaves differently from the corresponding up-down entanglement. We finally show that the first measures and the up-down reduced entanglement can be correctly described through a basic mean-field approach supplemented with symmetry restoration, whereas the concurrence requires at least the inclusion of random-phase-approximation–type correlations for a proper prediction. Fermionic separability is also discussed. | en |
| dcterms.creator.author | Di Tullio, Marco | es |
| dcterms.creator.author | Rossignoli, Raúl Dante | es |
| dcterms.creator.author | Cerezo, M. | es |
| dcterms.creator.author | Gigena, N. | es |
| dcterms.identifier.url | Recurso completo | es |
| dcterms.isPartOf.issue | vol. 100 | es |
| dcterms.isPartOf.series | Physical Review A | es |
| dcterms.issued | 2019-12-03 | |
| dcterms.language | Inglés | es |
| dcterms.license | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | es |
| dcterms.subject | Quantum entanglement | en |
| dcterms.subject | Fermion systems | en |
| dcterms.subject.materia | Ciencias Físicas | es |
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