Published December 16, 2005
| Published + Submitted
Journal Article
Open
Entanglement and quantum order parameters
- Creators
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Brandão, Fernando G. S. L.
Abstract
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.
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.Attached Files
Published - njp5_1_254.pdf
Submitted - 0509049v4.pdf
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Additional details
- Alternative title
- Entanglement as a quantum order parameter
- Eprint ID
- 67364
- Resolver ID
- CaltechAUTHORS:20160525-145304920
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Created
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2016-05-26Created from EPrint's datestamp field
- Updated
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2022-07-12Created from EPrint's last_modified field