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Cumulative quantum work-deficit versus entanglement in the dynamics of an infinite spin chain
Dhar H.S., Sen A., Sen U.,
Published in Elsevier B.V.
Volume: 378
Issue: 18-19
Pages: 1258 - 1263
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. © 2014 Elsevier B.V.
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Published in Elsevier B.V.
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