Quantum entaglement and order parameter in a paired finite Fermi system

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dc.citation.epage476en_US
dc.citation.issueNumber12en_US
dc.citation.spage473en_US
dc.citation.volumeNumber124en_US
dc.contributor.authorGedik, Z.en_US
dc.date.accessioned2015-07-28T11:57:16Z
dc.date.available2015-07-28T11:57:16Z
dc.date.issued2002-12en_US
dc.departmentDepartment of Physicsen_US
dc.description.abstractWe study the pairing correlations in a finite Fermi system from the quantum entanglement point of view. We investigate the relation between the order parameter, which has been introduced recently to describe both finite and infinite superconductors, and the concurrence. For a proper definition of the concurrence, we argue that a possible generalization of the spin flip transformation is a time reversal operation. While for a system with indefinite number of particles concurrence is a good measure of entanglement, for a finite system it does not distinguish between normal and superconducting states. We propose that the expectation value of the radial operator for the total pseudospin can be used to identify entanglement of pairing.en_US
dc.identifier.doi10.1016/S0038-1098(02)00551-3en_US
dc.identifier.eissn1879-2766
dc.identifier.issn0038-1098
dc.identifier.urihttp://hdl.handle.net/11693/11260
dc.language.isoEnglishen_US
dc.publisherElsevier Scienceen_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/S0038-1098(02)00551-3en_US
dc.source.titleSolid State Communicationsen_US
dc.subjectFinite Fermi Systemsen_US
dc.subjectOrder parameteren_US
dc.subjectQuantum entanglementen_US
dc.titleQuantum entaglement and order parameter in a paired finite Fermi systemen_US
dc.typeArticleen_US

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