Relativistic and Nonrelativistic Calculations of the Isoscalar Monopole and Dipole States

Journal Article · Wed Sep 01 04:00:00 EDT 2004 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/1.1806915· OSTI ID:20692632

Colo, G ^[1]; Van Giai, N ^[2]

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1. Dipartimento di Fisica, Universita degli Studi, and INFN Sezione di Milano, Milan (Italy)
2. Institut de Physique Nucleaire, IN2P3-CNRS, Orsay (France)

The study of the isoscalar giant monopole resonance (ISGMR) should allow extracting a value for the nuclear incompressibility coefficient K{sub {infinity}}. In this contribution, we review the most recent attempts along this line. While the nonrelativistic (Skyrme, Gogny) models predict K{sub {infinity}} to be around 220-235 MeV, the values obtained from the relativistic calculations are significantly larger (250-270 MeV). We argue that the most plausible reason for this discrepancy lies in the different behavior of the symmetry energy in the two classes of models. We also discuss the role of the isoscalar giant dipole resonance (ISGDR). We conclude that a number of experimental ambiguities still prevent us from deducing K{sub {infinity}} from the ISGDR with a comparable accuracy as from the ISGMR.

• OSTI ID: 20692632
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 9 Vol. 67; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRECTIONS
COUPLING
DIPOLES
GIANT RESONANCE
HEAVY ION REACTIONS
MEV RANGE
NUCLEAR MATTER
RELATIVISTIC RANGE
REVIEWS
SKYRME POTENTIAL
SYMMETRY