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Entanglement and quantum order parameters

Brandão, Fernando G. S. L. (2005) Entanglement and quantum order parameters. New Journal of Physics, 7 . Art. No. 254. ISSN 1367-2630. doi:10.1088/1367-2630/7/1/254.

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We show that the quantum order parameters (QOPs) associated with the transitions between a normal conductor and a superconductor in the BCS and η-pairing models and between a Mott-insulator and a superfluid in the Bose–Hubbard model are directly related to the amount of entanglement existent in the ground state of each system. This connection gives a physical meaningful interpretation to these QOP, which shows the intrinsically quantum nature of the phase transitions considered.

Item Type:Article
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URLURL TypeDescription Paper
Brandão, Fernando G. S. L.0000-0003-3866-9378
Alternate Title:Entanglement as a quantum order parameter
Additional Information:© 2005 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported (CC BY-NC-SA version 3.0) licence. Received 13 October 2005; Published 16 December 2005. The author would like to thank Jens Eisert and Martin Plenio for helpful comments on the manuscript and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for financial support.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
Record Number:CaltechAUTHORS:20160525-145304920
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Official Citation:Fernando G S L Brandão 2005 New J. Phys. 7 254
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:67364
Deposited By: Tony Diaz
Deposited On:26 May 2016 19:37
Last Modified:12 Jul 2022 19:48

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