Cumulative quantum work-deficit versus entanglement in the dynamics of an infinite spin chain
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.
Keywords
Cite
@article{arxiv.1307.1419,
title = {Cumulative quantum work-deficit versus entanglement in the dynamics of an infinite spin chain},
author = {Himadri Shekhar Dhar and Rupamanjari Ghosh and Aditi Sen De and Ujjwal Sen},
journal= {arXiv preprint arXiv:1307.1419},
year = {2014}
}
Comments
8 pages, 3 figures, elsarticle, final accepted version