Entanglement in quantum critical phenomena

Vidal, G., Latorre, J. I., Rico, E. and Kitaev, A. (2003) Entanglement in quantum critical phenomena. Physical Review Letters, 90 22: 227902-1-227902-4. doi:10.1103/PhysRevLett.90.227902

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Author Vidal, G.
Latorre, J. I.
Rico, E.
Kitaev, A.
Title Entanglement in quantum critical phenomena
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2003-06-06
Year available 2003
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.90.227902
Open Access Status File (Publisher version)
Volume 90
Issue 22
Start page 227902-1
End page 227902-4
Total pages 4
Place of publication College Pk
Publisher American Physical Society
Language eng
Subject 02 Physical Sciences
Abstract Entanglement, one of the most intriguing features of quantum theory and a main resource in quantum information science, is expected to play a crucial role also in the study of quantum phase transitions, where it is responsible for the appearance of long-range correlations. We investigate, through a microscopic calculation, the scaling properties of entanglement in spin chain systems, both near and at a quantum critical point. Our results establish a precise connection between concepts of quantum information, condensed matter physics, and quantum field theory, by showing that the behavior of critical entanglement in spin systems is analogous to that of entropy in conformal field theories. We explore some of the implications of this connection.
Keyword Physics, Multidisciplinary
Phase-transition
Information
Entropy
Irreversibility
Dimensions
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
 
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Created: Wed, 19 Sep 2007, 17:48:16 EST