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DISCORD-ENTANGLEMENT INTERPLAY IN THE THERMODYNAMIC LIMIT: THE XY-MODEL

J. BATLE

Departament de Física and IFISC, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain

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A. PLASTINO

IFLP-CCT-CONICET, National University La Plata, C.C. 727, 1900 La Plata, Argentina

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A. R. PLASTINO

CREG-UNLP-CONICET, National University la Plata, C.C. 727, 1900 La Plata, Argentina

Instituto Carlos I de Física Teórica y Computacional, Universidad de Granada, Granada, Spain

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, and

M. CASAS

Departament de Física and IFISC, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain

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https://doi.org/10.1142/S0219749913500032Cited by:1 (Source: Crossref)

Abstract

We investigate thermal properties of quantum correlations in the thermodynamic limit with reference to the XY-model and the finite two-qubit Heisenberg model. Although this model has been the subject of active entanglement-research, the bulk of the pertinent work refers to finite instantiations. As a consequence, the temperature cannot be properly defined in such circumstances, a problem that is overcome here. Our effort should be of interest because quantum discord notion.

Keywords:

PACS: 03.67.-a, 03.67.Mn, 03.65.-w

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