Relativistic approach to the nuclear breathing mode

Abstract

Microscopic theory of the nuclear response based on the relativistic meson-nucleon Lagrangian is applied to the description of the isoscalar giant monopole resonance (ISGMR) in a variety of nuclear systems. It is shown that the parameter-free inclusion of beyond-mean-field correlations of the quasiparticle-vibration coupling (qPVC) type in the leading approximation allows for a simultaneous realistic description of the ISGMR in nuclei of lead, tin, zirconium, and nickel mass regions, which is difficult on the mean-field level. The calculations employ the finite-range effective meson-nucleon interaction, which, in combination with the qPVC, has consistently demonstrated the ability to reliably describe many other nuclear structure phenomena. Systematic calculations of the isoscalar monopole response for nickel isotopes help reveal the central role of the coupling between the ISGMR and the low-energy quadrupole states in the placement of the ISGMR centroids.

Article: 5 pages, 3 figures

References in corpus (14)

• Relativistic Nuclear Energy Density Functionals: adjusting parameters to binding energies
• Isotopic dependence of the giant monopole resonance in the even-A ^{112-124}Sn isotopes and the asymmetry term in nuclear incompressibility
• Isospin Character of the Pygmy Dipole Resonance in 124Sn
• Relativistic quasiparticle time blocking approximation. Dipole response of open-shell nuclei
• Covariant theory of particle-vibrational coupling and its effect on the single-particle spectrum
• Particle-vibration coupling within covariant density functional theory
• Why is Tin so soft?
• Population of dipole states via isoscalar probes: the splitting of pygmy dipole resonance in ${}^{124}$Sn}
• Are There Nuclear Structure Effects on the Isoscalar Giant Monopole Resonance and Nuclear Incompressibility near A~90?
• Deformation-induced splitting of isoscalar E0 giant resonance: Skyrme random-phase-approximation analysis
• Impact of complex many-body correlations on electron capture in thermally excited nuclei around ${}^{78}$Ni
• Evolution of the isoscalar giant monopole resonance in the Ca isotope chain
• Microscopic response theory for strongly-coupled superfluid fermionic systems
• Nuclear Shell Structure in a Finite-Temperature Relativistic Framework

Cited by in corpus (6)

• Generalized time-dependent generator coordinate method for small and large amplitude collective motion
• Electric dipole polarizability of ${}^{58}$Ni
• Electric dipole polarizability constraints on neutron skin and symmetry energy
• Multipole responses in fissioning nuclei and their uncertainties
• Monopole Excitation and Nuclear Compressibility: Present and Future Perspectives
• Recent applications of the subtracted second RPA method