Entanglement of Hard‐Core Bosons on the Honeycomb Lattice

  title={Entanglement of Hard‐Core Bosons on the Honeycomb Lattice},
  author={Xue-Feng Zhang and Raoul Dillenschneider and Sebastian Eggert},
  journal={physica status solidi (b)},
The entanglement of hard‐core bosons in square and honeycomb lattices with nearest‐neighbor interactions is estimated by means of quantum Monte Carlo (QMC) simulations and spin‐wave (SW) analysis. The particular U(1) ‐invariant form of the concurrence is used to establish a connection with observables, such as density and superfluid density. For specific regimes, the concurrence is expressed as a combination of boson density and superfluid density. 


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