Haupttitel:
Entanglement Hamiltonians for non-criticalquantum chains
Autor*in:
Eisler, Viktor; Giulio, Giuseppe Di; Tonni, Erik; Peschel, Ingo
Datum der Freigabe:
2020-10-20T11:22:19Z
Abstract:
We study the entanglement Hamiltonian for finite intervals in infinite quantum chains for two different free-particle systems: coupled harmonic oscillators and fermionic hopping models with dimerization. Working in the ground state, the entanglement Hamiltonian describes again free bosons or fermions and is obtained from the correlation functions via high-precision numerics for up to several hundred sites. Far away from criticality, the dominant on-site and nearest-neighbour terms have triangular profiles that can be understood from the analytical results for a half-infinite interval. Near criticality, the longer-range couplings, although small, lead to a more complex picture. A comparison between the exact spectra and entanglement entropies and those resulting from the dominant terms in the Hamiltonian is also reported.
Teil des Identifiers:
e-ISSN (online): 1742-5468
ZDB-ID: 2138944-5
Freie Schlagwörter:
entanglement in extended quantum systems
DDC-Klassifikation:
530 Physik
Publikationstyp:
Wissenschaftlicher Artikel
Zeitschrift:
Journal of Statistical Mechanics: Theory and Experiment
Fachbereich/Einrichtung:
Physik
Anmerkungen:
This is the version of the article before peer review or editing, as submitted by an author to Journal of Statistical Mechanics: Theory and Experiment. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.1088/1742-5468/abb4da