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quant-ph2017★ 21 cited
Factorization and criticality in finite XXZ systems of arbitrary spin
M. Cerezo, R. Rossignoli, N. Canosa +1
We analyze ground state (GS) factorization in general arrays of spins with couplings immersed in nonuniform fields. It is shown that an exceptionally degenerate set of…
quant-ph2016★ 8 cited
Entanglement and coherence in a spin-s XXZ system under non-uniform fields
E. Rios, R. Rossignoli, N. Canosa
We investigate entanglement and coherence in an spin- pair immersed in a non-uniform transverse magnetic field. The ground state and thermal entanglement phase diagrams ar…