Issue |
EPL
Volume 102, Number 3, May 2013
|
|
---|---|---|
Article Number | 30001 | |
Number of page(s) | 6 | |
Section | General | |
DOI | https://doi.org/10.1209/0295-5075/102/30001 | |
Published online | 30 April 2013 |
Nonergodic classical correlations lead to ergodic quantum correlations in low-dimensional spin models
Harish-Chandra Research Institute, Chhatnag Road - Jhunsi, Allahabad 211019, India
Received: 27 March 2013
Accepted: 16 April 2013
Quantum correlations are traditionally viewed as constituted out of classical correlations and single-party parameters. While this, of course, remains so, we show that entanglement can have statistical mechanical properties like ergodicity, which are not inherited from the corresponding classical correlations and single-party parameters, in diagonalizable as well as nondiagonalizable low-dimensional quantum spin systems. In particular, we find that the results hold for the quantum XY spin models on the chain, ladder and in two dimensions.
PACS: 03.67.-a – Quantum information / 05.30.-d – Quantum statistical mechanics / 75.10.Jm – Quantized spin models, including quantum spin frustration
© EPLA, 2013
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