Effect of pairing correlations on incompressibility and symmetry energy in nuclear matter and finite nuclei

2010/05/31 by E. Khan, J. Margueron, G. Colò +3 · 43 citations
Chemistry · Physics and Astronomy · #Advanced NMR Techniques and Applications #Condensed matter physics #Isoscalar #Isovector #Nuclear matter #Nuclear physics #Nuclear physics research studies #Nucleon #Pairing #Physics #Quantum Chromodynamics and Particle Interactions #Superconductivity #Superfluidity #Symmetry (geometry) #nucl-th

paper · pdf · doi:10.1103/physrevc.82.024322

published in Physical Review C 82(2) (American Institute of Physics) · 9 pages, 6 figures

openalex publication_date 2010/08/31 · arxiv created 2010/09/02 · arxiv updated 2014/11/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The role of superfluidity in incompressibility and in symmetry energy is studied in nuclear matter and finite nuclei. Several pairing interactions are used: surface, mixed, and isovector dependent. Pairing has a small effect on the nuclear matter incompressibility at saturation density, but the effects are significant at lower densities. The pairing effect on the centroid energy of the isoscalar giant monopole resonance (GMR) is also evaluated for Pb and Sn isotopes by using a microscopic constrained-HFB approach and is found to change at most by 10% the nucleus incompressibility K_A. It is shown by using the local density approximation that most of the pairing effect on the GMR centroid comes from the low-density nuclear surface.

Citations

• Giant monopole resonance in Pb isotopes
• BCS-BEC crossover of neutron pairs in symmetric and asymmetric nuclear matter
• Theory of Superconductivity
• Isospin asymmetry in nuclei and neutron stars
• Isoscalar giant resonances in the Sn nuclei and implications for the asymmetry term in the nuclear-matter incompressibility