In many-body perturbation theory（MBPT） we always introduce a parameter Nshellto measure the maximal allowed major harmonic-oscillator（HO） shells for the single-particle basis, while the no-core shell model（NCSM）...In many-body perturbation theory（MBPT） we always introduce a parameter Nshellto measure the maximal allowed major harmonic-oscillator（HO） shells for the single-particle basis, while the no-core shell model（NCSM） uses N_（max）h？ HO excitation truncation above the lowest HO configuration for the many-body basis. It is worth comparing the two different methods. Starting from “bare” and Okubo-Lee-Suzuki renormalized modern nucleon-nucleon interactions, NNLO_（opt） and JISP16, we show that MBPT within Hartree-Fock bases is in reasonable agreement with NCSM within harmonic oscillator bases for ~4He and ^（16）O in “close” model space. In addition, we compare the results using “bare” force with the Okubo-Lee-Suzuki renormalized force.展开更多
基金Supported by National Key Basic Research Program of China(2013CB834402)National Natural Science Foundation of China(11235001,11320101004,11575007)the CUSTIPEN(China-U.S.Theory Institute for Physics with Exotic Nuclei) funded by the U.S.Department of Energy,Office of Science(DE-SC0009971)
文摘In many-body perturbation theory（MBPT） we always introduce a parameter Nshellto measure the maximal allowed major harmonic-oscillator（HO） shells for the single-particle basis, while the no-core shell model（NCSM） uses N_（max）h？ HO excitation truncation above the lowest HO configuration for the many-body basis. It is worth comparing the two different methods. Starting from “bare” and Okubo-Lee-Suzuki renormalized modern nucleon-nucleon interactions, NNLO_（opt） and JISP16, we show that MBPT within Hartree-Fock bases is in reasonable agreement with NCSM within harmonic oscillator bases for ~4He and ^（16）O in “close” model space. In addition, we compare the results using “bare” force with the Okubo-Lee-Suzuki renormalized force.
