In the trapped one-dimensional Bose-Hubbard model, bipartite entanglement entropy acts as an order parameter for the formation of a Mott-insulating domain and for the emergence of a central superfluid domain.
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Information measures for a local quantum phase transition: Lattice bosons in a one-dimensional harmonic trap
In the trapped one-dimensional Bose-Hubbard model, bipartite entanglement entropy acts as an order parameter for the formation of a Mott-insulating domain and for the emergence of a central superfluid domain.