Thermal local quantum Fisher and Wigner–Yanase correlations in an anisotropic two-qubit Heisenberg XY model

The thermal quantum correlations’ dynamics of an anisotropic two-qubit Heisenberg XY model in the presence of an x-projected magnetic field is investigated in this paper. We analyze the dynamics and generation of quantum correlations using local quantum-Fisher information (LQFI), local quantum-uncertainty (LQU), and log-negativity (LNE). Using the associated parameters of the configuration, we demonstrate the successful generation of entanglement and quantum correlations beyond entanglement in the anisotropic spin-chain state. Certain values and ranges of anisotropy, magnetic field, and spin coupling strength are proposed that can be used to achieve either a non-maximal or maximal quantum correlated state. The characterization of the spin-chain state by various parameters determines the dynamical patterns, degree, and preservation limits of the associated quantum correlations. Finally, the LQFI, LQU, and LNE functions’ robustness is highly dependent on their parameters, and they rarely agree on the degree of quantum correlations and dynamical patterns.