Source:http://linkedlifedata.com/resource/pubmed/id/16605844
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
11
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| pubmed:dateCreated |
2006-4-11
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| pubmed:abstractText |
We propose a new approach to study quantum phase transitions in low-dimensional lattice models. It is based on studying the von Neumann entropy of two neighboring central sites in a long chain. It is demonstrated that the procedure works equally well for fermionic and spin models, and the two-site entropy is a better indicator of quantum phase transition than calculating gaps, order parameters, or the single-site entropy. The method is especially convenient when the density-matrix renormalization-group algorithm is used.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Mar
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| pubmed:issn |
0031-9007
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:day |
24
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| pubmed:volume |
96
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
116401
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| pubmed:year |
2006
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| pubmed:articleTitle |
Two-site entropy and quantum phase transitions in low-dimensional models.
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| pubmed:affiliation |
Research Institute for Solid State Physics and Optics, H-1525 Budapest, P.O. Box 49, Hungary.
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| pubmed:publicationType |
Journal Article
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