Chiral NNLO sat descriptions of nuclear multipole resonances within the random-phase approximation

作者: Q Wu , BS Hu , FR Xu , YZ Ma , SJ Dai

DOI: 10.1103/PHYSREVC.97.054306

关键词:

摘要: We study nuclear multipole resonances in the framework of random-phase approximation by using chiral potential ${\mathrm{NNLO}}_{\text{sat}}$. This includes two- and three-body terms that have been simultaneously optimized to low-energy nucleon-nucleon scattering data selected structure data. Our main focuses isoscalar monopole, isovector dipole, quadrupole closed-shell nuclei, $^{4}\mathrm{He}$, $^{16,22,24}\mathrm{O}$, $^{40,48}\mathrm{Ca}$. These resonance modes widely observed experiment. In addition, we use a renormalized ${V}_{\text{low-}k}$, based on ${\mathrm{N}}^{3}\mathrm{LO}$ two-body Entem Machleidt [Phys. Rev. C 68, 041001 (2011)]. introduces dependency cutoff parameter used normalization procedure as reported previous works other groups. While ${\mathrm{NNLO}}_{\text{sat}}$ can reasonably reproduce resonances, it is not possible find single for ${V}_{\text{low-}k}$ describes different types modes. The sensitivity be explained missing induced forces calculations. results neutron-rich $^{22,24}\mathrm{O}$ show mixing nature dipole channel at low energies. predict $^{22}\mathrm{O}$ $^{24}\mathrm{O}$ energies lower than 5 MeV.

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