Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2005-12-21
Physics
Condensed Matter
Statistical Mechanics
17 pages, 3 figures, CMT29 proceedings
Scientific paper
Entanglement properties of the trial many-body wave functions in variational treatments of the transverse Ising model in two, three, and four dimensions are investigated. Based on data for magnetizations and correlation functions generated by for symmetry-breaking Hartree-Jastrow trial ground states, results are presented for several measures of bipartite entanglement, including the von Neumann entropy of a single spin in the lattice, the concurrence between two spins, and a lower bound on the localizable entanglement, as functions of coupling strength. A simple relation is established between the Hartree-Jastrow states and the nilpotent polynomial representation of multipartite entanglement. In addition, some general comments are made on the entanglement properties of classes of many-body wave functions commonly adopted in theories of strongly correlated quantum systems.
Clark John Willis
Mandilara A.
Ristig Manfred L.
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