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Cited by 311

The DOI matches its Crossref record; 33 of the 33 references it cites were found in a registry or an index.

Global quantum discord in multipartite systems

Open access
Rulli, C. C., Sarandy, M. S.·2011·Physical Review A
DOI 10.1103/physreva.84.042109
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Abstract

We propose a global measure for quantum correlations in multipartite systems, which is obtained by suitably recasting the quantum discord in terms of relative entropy and local von Neumann measurements. The measure is symmetric with respect to subsystem exchange and is shown to be nonnegative for an arbitrary state. As an illustration, we consider tripartite correlations in the Werner-GHZ (Greenberger-Horne-Zeilinger) state and multipartite correlations at quantum criticality. In particular, in contrast with the pairwise quantum discord, we show that the global quantum discord is able to characterize the infinite-order quantum phase transition in the Ashkin-Teller spin chain.

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Metadata

Authors
Rulli, C. C., & Sarandy, M. S.
Venue
Physical Review A
Publisher
American Physical Society (APS)
Published
2011-10-11
Volume
84
Issue
4
ISSN
  • 0556-2791 (ISSN-L)
  • 1050-2947
  • 1094-1622
DOI
10.1103/physreva.84.042109
OpenAlex
W2046667413
Cited by
311
References
33
FWCI
24.25
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Global quantum discord in multipartite systems. https://app.cochat.ai/papers/10.1103/physreva.84.042109
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Rulli, C. C., & Sarandy, M. S. (2011). Global quantum discord in multipartite systems. Physical Review A. https://doi.org/10.1103/physreva.84.042109

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.