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Title: Delta(1232) isobar excitations and the ground state of nuclei
Author: Frick, Tobias
Kaiser, Steffen
Müther, Herbert
Polls Martí, Artur
Entem, D. R.
Machleidt, R.
Keywords: Estructura nuclear
Excitació nuclear
Nuclear structure
Nuclear excitation
Issue Date: 2002
Publisher: The American Physical Society
Abstract: The influence of Delta isobar components on the ground-state properties of nuclear systems is investigated for nuclear matter as well as finite nuclei. Many-body wave functions, including isobar configurations and binding energies, are evaluated employing the framework of the coupled-cluster theory. It is demonstrated that the effect of isobar configurations depends in a rather sensitive way on the model used for the baryon-baryon interaction. As examples for realistic baryon-baryon interactions with explicit inclusion of isobar channels we use the local (V28) and nonlocal meson-exchange potentials (Bonn2000) but also a model recently developed by the Salamanca group, which is based on a quark picture. The differences obtained for the nuclear observables are related to the treatment of the interaction, the pi-exchange contributions in particular, at high momentum transfers.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review C, 2002, vol. 65, núm. 3, p. 034316-1-034316-7
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ISSN: 0556-2813
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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