Shareability of Quantum Correlations in a Many-Body Spin System with Two- and Three-Body Interactions
arXiv:2310.20372 · doi:10.1103/PhysRevA.109.032423
Abstract
The shareability of quantum correlations among the constituent parties of a multiparty quantum system is restricted by the quantum information theoretic concept called monogamy. Depending on the multiparty quantum systems, different measures of quantum correlations show disparate signatures for monogamy. We characterize the shareability of quantum correlations, from both entanglement-separability and information-theoretic kinds, in a multiparty quantum spin system containing two- and three-body interactions with respect to its system parameters and external applied magnetic field. Monogamy score in this system exhibits both monogamous and non-monogamous traits depending on the quantum correlation measure, strengths of system parameters and external magnetic field. The percentage of non-monogamous states when the information-theoretic quantum correlations are considered is higher than that of the entanglement-separability kind in allowed ranges of these variables. The integral powers of the quantum correlation measures for which the non-monogamous states become monogamous are identified.
12 pages, 7 figures, RevTeX4-2, journal accepted version
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