Relativistic nuclear structure physics

Anastasio, Magalí; Celenza, L. S.; Pong, W.S.; Shakin, C. M.

doi:10.1016/0370-1573(83)90060-1

Cited by 313 publications

(150 citation statements)

References 63 publications

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“…When three-body forces are considered in variational calculations it is possible to achieve better saturation properties only when an adhoc repulsive short-range component of this three-body force is added [137,138]. It has also been suggested that a relativistic treatment of the nucleon in the medium using a Dirac-Brueckner approach provides the necessary ingredients for a better description of saturation [139] - [142].…”

Section: Saturation Of Nuclear Matter From Short-range Correlationsmentioning

confidence: 99%

Self-consistent Green's function method for nuclei and nuclear matter

Dickhoff

Barbieri

2004

Progress in Particle and Nuclear Physics

501

599

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Recent results obtained by applying the method of self-consistent Green's functions to nuclei and nuclear matter are reviewed. Particular attention is given to the description of experimental data obtained from the (e,e ′ p) and (e,e ′ 2N) reactions that determine one and two-nucleon removal probabilities in nuclei since the corresponding amplitudes are directly related to the imaginary parts of the single-particle and two-particle propagators. For this reason and the fact that these amplitudes can now be calculated with the inclusion of all the relevant physical processes, it is useful to explore the efficacy of the method of self-consistent Green's functions in describing these experimental data. Results for both finite nuclei and nuclear matter are discussed with particular emphasis on clarifying the role of short-range correlations in determining various experimental quantities. The important role of long-range correlations in determining the structure of lowenergy correlations is also documented. For a complete understanding of nuclear phenomena it is therefore essential to include both types of physical correlations. We demonstrate that recent experimental results for these reactions combined with the reported theoretical calculations yield a very clear understanding of the properties of all protons in the nucleus. We propose that this knowledge of the properties of constituent fermions in a correlated many-body system is a unique feature of nuclear physics.

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Section: Saturation Of Nuclear Matter From Short-range Correlationsmentioning

confidence: 99%

Self-consistent Green's function method for nuclei and nuclear matter

Dickhoff

Barbieri

2004

Progress in Particle and Nuclear Physics

501

599

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“…In extreme dripline nuclei as e.g. 8 B [1] and 11 Li [2] evidence for a strong competition of interactions between individual nucleons and mean-field dynamics is found.…”

Section: Introductionmentioning

confidence: 99%

Hartree-Fock calculations in the density matrix expansion approach

1998

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The density matrix expansion is used to derive a local energy density functional for finite range interactions with a realistic meson exchange structure. Exchange contributions are treated in a local momentum approximation. A generalized Slater approximation is used for the density matrix where an effective local Fermi momentum is chosen such that the next to leading order off-diagonal term is canceled. Hartree-Fock equations are derived incorporating the momentum structure of the underlying finite range interaction. For applications a density dependent effective interaction is determined from a G-matrix which is renormalized such that the saturation properties of symmetric nuclear matter are reproduced. Intending applications to systems far off stability special attention is paid to the low density regime and asymmetric nuclear matter. Results are compared to predictions obtained from Skyrme interactions. The ground state properties of stable nuclei are well reproduced without further adjustments of parameters. The potential of the approach is further exemplified in calculations for A=100. . .140 tin isotopes. Rather extended neutron skins are found beyond 130 Sn corresponding to solid layers of neutron matter surrounding a core of normal composition.21.60-n,21.60Jz,21.10.Dr

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“…Such Dirac BHF (DBHF) calculations, as this has become known, have been performed for nuclear matter by, e. g., Shakin and collaborators [11], Brockmann and Machleidt [12], and ter Haar and Malfliet [13]. The basic aspects of this approach have been thoroughly investigated by Horowitz and Serot [14].…”

mentioning

confidence: 99%

Dirac effects in the Hartree-Fock description of finite nuclei employing realistic forces

1993

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We discuss two different approximation schemes for the self-consistent solution of the relativistic Brueckner-Hartree-Fock equation for finite nuclei. In the first scheme, the Dirac effects are deduced from corresponding nuclear matter calculations, whereas in the second approach the local-density approximation is used to account for the effects of correlations. The results obtained by the two methods are very similar. Employing a realistic oneboson-exchange potential (Bonn A), the predictions for energies and radii of 16 O and 40 Ca come out in substantially better agreement with experiment as compared to non-relativistic approaches. As a by-product of our study, it turns out that the Fock exchange-terms, ignored in a previous investigation, are not negligible.

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Relativistic nuclear structure physics

Cited by 313 publications

References 63 publications

Self-consistent Green's function method for nuclei and nuclear matter

Self-consistent Green's function method for nuclei and nuclear matter

Hartree-Fock calculations in the density matrix expansion approach

Dirac effects in the Hartree-Fock description of finite nuclei employing realistic forces

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