Dresden 2014 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 90: Low-dimensional systems: Topological order (organized by TT)

HL 90.6: Vortrag

Donnerstag, 3. April 2014, 10:45–11:00, HSZ 204

Entanglement Spectra of Interacting Fermions in Quantum Monte Carlo Simulations — Fakher F. Assaad¹, Thomas C. Lang², and •Francesco Parisen Toldin¹ — ¹Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Germany — ²Department of Physics, Boston University, U.S.A.

In a recent article T. Grover introduced a simple method to compute Renyi entanglement entropies in the realm of the auxiliary field quantum Monte Carlo algorithm [1]. Here, we further develop this approach and provide a stabilization scheme to compute higher order Renyi entropies and an extension to access the entanglement spectrum [2]. The method is tested on systems of correlated topological insulators.
T. Grover, Phys. Rev. Lett. 111, 130402 (2013)
F. F. Assaad, T. C. Lang, F. P. Toldin, arXiv:1311.5851