Relativistic Brueckner-Hartree-Fock theory in nuclear matter without the average momentum approximation

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dc.contributor.authorTong, Huien_ZA
dc.contributor.authorRen, Xiu-Leien_ZA
dc.contributor.authorRing, Peteren_ZA
dc.contributor.authorShen, Shi-Hangen_ZA
dc.contributor.authorWang, Si-Boen_ZA
dc.contributor.authorMeng, Jieen_ZA
dc.date.accessioned2019-10-23T14:21:29Z
dc.date.available2019-10-23T14:21:29Z
dc.date.issued2018
dc.descriptionCITATION: Tong, H., et al. 2018. Relativistic Brueckner-Hartree-Fock theory in nuclear matter without the average momentum approximation. Physical Review C, 98(5):054302, doi:10.1103/PhysRevC.98.054302.en_ZA
dc.descriptionThe original publication is available at https://journals.aps.org/prcen_ZA
dc.description.abstractBrueckner-Hartree-Fock theory allows one to derive the G matrix as an effective interaction between nucleons in the nuclear medium. It depends on the center-of-mass momentum P of the two particles and on the two relative momenta q and q′ before and after the scattering process. In the evaluation of the total energy per particle in nuclear matter, usually the angle-averaged center-of-mass momentum approximation has been used. We derive in detail the exact expressions of the angular integrations of the momentum P within relativistic Brueckner-Hartree-Fock (RBHF) theory, especially for the case of asymmetric nuclear matter. In order to assess the reliability of the conventional average momentum approximation for the binding energy, the saturation properties of symmetric and asymmetric nuclear matter are systematically investigated based on the realistic Bonn nucleon-nucleon potential. It is found that the exact treatment of the center-of-mass momentum leads to non-negligible contributions to the higher order physical quantities. The correlations between the symmetry energy Esym, the slope parameter L, and the curvature Ksym of the symmetry energy are investigated. The results of our RBHF calculations for the bulk parameters characterizing the equation of state are compared with recent constraints extracted from giant monopole resonance and isospin diffusion experiments.en_ZA
dc.description.urihttps://journals.aps.org/prc/abstract/10.1103/PhysRevC.98.054302
dc.description.versionPublisher's versionen_ZA
dc.format.extent12 pages : illustrations (some colour)en_ZA
dc.identifier.citationTong, H., et al. 2018. Relativistic Brueckner-Hartree-Fock theory in nuclear matter without the average momentum approximation. Physical Review C, 98(5):054302, doi:10.1103/PhysRevC.98.054302en_ZA
dc.identifier.issn2469-9993 (online)
dc.identifier.issn2469-9985 (print)
dc.identifier.otherdoi:10.1103/PhysRevC.98.054302
dc.identifier.urihttp://hdl.handle.net/10019.1/106711
dc.language.isoen_ZAen_ZA
dc.publisherAmerican Physical Societyen_ZA
dc.rights.holderAmerican Physical Societyen_ZA
dc.subjectNuclear physics -- Researchen_ZA
dc.subjectNuclear physicsen_ZA
dc.subjectParticles (Nuclear physics)en_ZA
dc.subjectRelativistic Brueckner-Hartree-Fock theory (RBHF)en_ZA
dc.subjectNuclear matteren_ZA
dc.subjectNuclear symmetry energyen_ZA
dc.subjectBonn potentialen_ZA
dc.subjectNuclear forces (Physics)en_ZA
dc.titleRelativistic Brueckner-Hartree-Fock theory in nuclear matter without the average momentum approximationen_ZA
dc.typeArticleen_ZA
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