Long Range Tensor Correlations in Charge and Parity Projected Fermionic Molecular Dynamics

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dc.creatorBacca, Sonia
dc.creatorFeldmeier, Hans
dc.creatorNeff, Thomas
dc.date2008-07-23
dc.date.accessioned2026-07-07T11:45:02Z
dc.date.available2026-07-07T11:45:02Z
dc.descriptionWithin the framework of Fermionic Molecular Dynamics a method is developed to better account for long range tensor correlations in nuclei when working with a single Slater determinant. Single-particle states with mixed isospin and broken parity build up an intrinsic Slater determinant which is then charge and parity projected. By minimizing the energy of this many-body state with respect to the parameters of the single-particle states and projecting afterwards on angular momentum ground state energies are obtained that are systematically lower than corresponding Hartree-Fock results. The realistic Argonne V18 potential is used and short range correlations are treated with the Unitary Correlation Operator Method. Comparison with exact few-body calculations shows that in $^4$He about one fifth of the correlation energy due to long-range correlations are accounted for. These correlations which extend over the whole nucleus are visualized with the isospin and spin-isospin density of the intrinsic state. The divergence of the spin-isospin density, the source for pion fields, turns out to be of dipole nature.
dc.description12 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0807.3687
dc.identifierhttp://arxiv.org/abs/0807.3687
dc.identifierPhys.Rev.C78:044306,2008
dc.identifierdoi:10.1103/PhysRevC.78.044306
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201756
dc.subjectNuclear Theory
dc.titleLong Range Tensor Correlations in Charge and Parity Projected Fermionic Molecular Dynamics
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