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dc.title Entanglement and area laws in weakly correlated gaussian states en
dc.type Artículo es
dcterms.abstract We examine the evaluation of entanglement measures in weakly correlated gaussian states. It is shown that they can be expressed in terms of the singular values of a particular block of the generalized contraction matrix. This result enables to obtain in a simple way asymptotic expressions and related area laws for the entanglement entropy of bipartitions in pure states, as well as for the logarithmic negativity associated with bipartitions and also pairs of arbitrary subsystems. As illustration, we consider different types of contiguous and noncontiguous blocks in two dimensional lattices. Exact asymptotic expressions are provided for both first neighbor and full range couplings, which lead in the first case to area laws depending on the orientation and separation of the blocks. en
dcterms.extent 11 p. es
dcterms.issued 2012-12
dcterms.language Inglés es
dcterms.license Attribution 4.0 International (BY 4.0) es
dcterms.publisher APS phisycs es
dcterms.subject entanglement en
dcterms.subject Gaussian states en
cic.version info:eu-repo/semantics/submittedVersion es Matera, Juan Mauricio es Rossignoli, Raúl Dante es Canosa, Norma B. es
cic.lugarDesarrollo Universidad Nacional de La Plata es
dcterms.subject.materia Ciencias Físicas es
dcterms.identifier.url Documento completo es
dcterms.identifier.other DOI 10.1103/PhysRevA.86.062324 es
dcterms.isPartOf.issue vol. 86, nº 4 es
dcterms.isPartOf.series Physical Review A es
cic.isPeerReviewed true es
cic.isFulltext true es


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