Spectral conditions for positive maps

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dc.contributor.author Chruściński, Dariusz
dc.contributor.author Kossakowski, Andrzej
dc.date.accessioned 2012-11-30T08:46:17Z
dc.date.available 2012-11-30T08:46:17Z
dc.date.issued 2008-09-29
dc.identifier.citation Comm. Math. Phys. 290, 1051 (2009).
dc.identifier.other doi:10.1007/s00220-009-0790-8
dc.identifier.uri http://repozytorium.umk.pl/handle/item/190
dc.description.abstract We provide a partial classification of positive linear maps in matrix algebras which is based on a family of spectral conditions. This construction generalizes celebrated Choi example of a map which is positive but not completely positive. It is shown how the spectral conditions enable one to construct linear maps on tensor products of matrix algebras which are positive but only on a convex subset of separable elements. Such maps provide basic tools to study quantum entanglement in multipartite systems.
dc.language.iso eng
dc.relation.uri http://arxiv.org/abs/0809.4909
dc.rights info:eu-repo/semantics/openAccess
dc.subject Quantum Physics
dc.title Spectral conditions for positive maps
dc.type info:eu-repo/semantics/article

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