Linked Life Data

18233268

Source:http://linkedlifedata.com/resource/pubmed/id/18233268

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
pubmed:issue
22
pubmed:dateCreated
2008-1-31
pubmed:abstractText
We propose a real-space renormalization group (RG) transformation for quantum systems on a D-dimensional lattice. The transformation partially disentangles a block of sites before coarse-graining it into an effective site. Numerical simulations with the ground state of a 1D lattice at criticality show that the resulting coarse-grained sites require a Hilbert space dimension that does not grow with successive RG transformations. As a result we can address, in a quasi-exact way, tens of thousands of quantum spins with a computational effort that scales logarithmically in the system's size. The calculations unveil that ground state entanglement in extended quantum systems is organized in layers corresponding to different length scales. At a quantum critical point, each relevant length scale makes an equivalent contribution to the entanglement of a block.
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Nov
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
99
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
220405
pubmed:year
2007
pubmed:articleTitle
Entanglement renormalization.
pubmed:affiliation
School of Physical Sciences, the University of Queensland, QLD 4072, Australia.
pubmed:publicationType
Journal Article