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Numerical studies of entanglement properties in one- and two-dimensional quantum Ising and XXZ models

We investigate entanglement properties of infinite 1D and 2D spin-1/2 quantum Ising and XXZ models. Tensor network methods (MPS in 1D and TERG and CTMRG in 2D) are used to model the ground state of the studied models. Different entanglement measures, such as one-site entanglement entropy, one-tangle, concurrence of formation and assistance, negativity and entanglement per bond are calculated and their `characterizing power' to determine quantum phase transitions is compared. A special emphasis is made on the study of entanglement monogamy properties.

preprint2015arXivOpen access
B. Braiorr-OrrsM. WeyrauchM. V. Rakov
cond-mat.otherquant-ph
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Open access3 authors2 topics
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B. Braiorr-OrrsM. WeyrauchM. V. Rakov

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