Density Matrix Functional Theory for the Lipkin model

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dc.creatorLacroix, Denis
dc.date2008-12-18
dc.date.accessioned2026-07-07T12:31:55Z
dc.date.available2026-07-07T12:31:55Z
dc.descriptionA Density Matrix Functional theory is constructed semi-empirically for the two-level Lipkin model. This theory, based on natural orbitals and occupation numbers, is shown to provide a good description for the ground state energy of the system as the two-body interaction and particle number vary. The application of Density Matrix Functional theory to the Lipkin model illustrates that it could be a valuable tool for systems presenting a shape phase-transition such as nuclei. The improvement of one-body observables description as well as the interest for Energy Density Functional theory are discussed.
dc.description9 pages, 7 figures, to appear in Physical Review C
dc.identifierhttps://arxiv.org/abs/0812.3604
dc.identifierhttp://arxiv.org/abs/0812.3604
dc.identifierPhys.Rev.C79:014301,2009
dc.identifierdoi:10.1103/PhysRevC.79.014301
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/216611
dc.subjectNuclear Theory
dc.subjectStrongly Correlated Electrons
dc.titleDensity Matrix Functional Theory for the Lipkin model
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