Author
Listed:
- Weiwen Cheng
(Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunication
Hubei Normal University)
- Zhijun Zhang
(Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunication)
- Longyan Gong
(Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunication)
- Shengmei Zhao
(Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunication)
Abstract
We explore quantum coherence, inherited from Wigner-Yanase skew information, to analyze quantum criticality in the anisotropic XY chain model at finite temperature. Based on the exact solutions of the Hamiltonian, the quantum coherence contained in a nearest-neighbor spin pairs reduced density matrix ρ is obtained. The first-order derivative of the quantum coherence is non-analytic around the critical point at sufficient low temperature. The finite-temperature scaling behavior and the universality are verified numerically. In particular, the quantum coherence can also detect the factorization transition in such a model at sufficient low temperature. We also show that quantum coherence contained in distant spin pairs can characterize quantum criticality and factorization phenomena at finite temperature. Our results imply that quantum coherence can serve as an efficient indicator of quantum criticality in such a model and shed considerable light on the relationships between quantum phase transitions and quantum information theory at finite temperature.
Suggested Citation
Weiwen Cheng & Zhijun Zhang & Longyan Gong & Shengmei Zhao, 2016.
"Finite-temperature scaling of quantum coherence near criticality in a spin chain,"
The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 89(6), pages 1-6, June.
Handle:
RePEc:spr:eurphb:v:89:y:2016:i:6:d:10.1140_epjb_e2016-70042-6
DOI: 10.1140/epjb/e2016-70042-6
Download full text from publisher
As the access to this document is restricted, you may want to search for a different version of it.
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:spr:eurphb:v:89:y:2016:i:6:d:10.1140_epjb_e2016-70042-6. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.springer.com .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.