Berlin 2018 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 40: Dual-Method Approaches to Quantum Many-Body Systems II

TT 40.4: Vortrag

Dienstag, 13. März 2018, 10:45–11:00, H 3010

Entanglement properties of the Hubbard chain model — •Francesco Parisen Toldin and Fakher F. Assaad — Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Germany

We study the entanglement properties for a bipartition of the one-dimensional Hubbard model. By means of a recently-developed Quantum Monte Carlo method which exploits the replica trick [1], we sample the spin correlations of the entanglement Hamiltonian, and compare our results with those for an open chain of the same size of the entanglement cut. We further introduce a dimerization of the hopping constants, which gives rise to a distinctive behavior in the correlations, depending whether the entanglement cut creates a topological or a trivial phase.
F. F. Assaad, T. C. Lang, F. Parisen Toldin, Phys. Rev. B 89, 125121 (2014)