论文标题
在自一致的准胶片振动耦合方法中，统一对等构巨型单极共振的统一描述
Towards a Unified Description of Isoscalar Giant Monopole Resonances in a Self-Consistent Quasiparticle-Vibration Coupling Approach
论文作者
论文摘要
“为什么锡的EOS如此柔软？”是一个长期以来的问题，它阻止我们准确地确定核不理性$ k_ \ infty $。为了解决这个难题，开发了基于Skyrme-Hartree-fock-bogoliubov的完全自洽的准粒子随机相位近似（QRPA）加上准粒子振动耦合（QPVC）方法。我们表明，QPVC引入的多体相关性，它将SN同位素中的ISGMR能量转移到$^{208} $ pb中的能量高约0.4 meV，在提供SN和PB同位素的ISGMR的统一描述中起着至关重要的作用。 SV-K226和KDE0对实验强度函数的最佳描述，其特征是不可压缩的值$ k_ \ infty = $ 226 MeV和229 MeV，在平均场水平上。
"Why is the EoS for tin so soft?" is a longstanding question, which prevents us from determining the nuclear incompressibility $K_\infty$ accurately. To solve this puzzle, a fully self-consistent quasiparticle random phase approximation (QRPA) plus quasiparticle-vibration coupling (QPVC) approach based on Skyrme-Hartree-Fock-Bogoliubov is developed. We show that the many-body correlations introduced by QPVC, which shift the ISGMR energy in Sn isotopes by about 0.4 MeV more than the energy in $^{208}$Pb, play a crucial role in providing a unified description of the ISGMR in Sn and Pb isotopes. The best description of the experimental strength functions is given by SV-K226 and KDE0, which are characterized by incompressibility values $K_\infty=$ 226 MeV and 229 MeV, respectively, at mean field level.
