Cumulative quantum work-deficit versus entanglement in the dynamics of an infinite spin chain |
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Affiliation: | 1. School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110067, India;2. School of Natural Sciences, Shiv Nadar University, Gautam Budh Nagar, UP 203207, India;3. Harish-Chandra Research Institute, Chhatnag Road, Jhunsi, Allahabad 211019, India |
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Abstract: | We find that the dynamical phase transition (DPT) in nearest-neighbor bipartite entanglement of time-evolved states of the anisotropic infinite quantum XY spin chain, in a transverse time-dependent magnetic field, can be quantitatively characterized by the dynamics of an information-theoretic quantum correlation measure, namely, quantum work-deficit (QWD). We show that only those nonequilibrium states exhibit entanglement resurrection after death, on changing the field parameter during the DPT, for which the cumulative bipartite QWD is above a threshold. The results point to an interesting inter-relation between two quantum correlation measures that are conceptualized from different perspectives. |
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Keywords: | Quantum XY spin chain Entanglement Quantum work-deficit Dynamical phase transition |
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