Showing papers by "T.T.S. Kuo published in 2022"
TL;DR: In this paper , the ground state energy of the doubly-magic nucleus Ca has been calculated using the CD-Bonn nucleon-nucleon potential, and the short-range repulsion of this potential has been renormalized by integrating out its high-momentum components so as to derive a low-k potential Vlow−k defined up to a cutoff momentum Λ.
Abstract: We have calculated the ground-state energy of the doubly-magic nucleus Ca within the framework of the Goldstone expansion using the CD-Bonn nucleon-nucleon potential. The short-range repulsion of this potential has been renormalized by integrating out its high-momentum components so as to derive a low-momentum potential Vlow−k defined up to a cutoff momentum Λ. A simple criterion has been employed to establish a connection between this cutoff momentum and the size of the two-nucleon model space in the harmonic oscillator basis. This model-space truncation approach provides a reliable way to renormalize the free nucleon-nucleon potential preserving its many-body physics. The role of the 3p − 3h and 4p − 4h excitations in the description of the ground state of Ca is discussed.
TL;DR: In this paper , the structure of the nuclei Pb was studied in terms of shell model employing a realistic effective interaction derived from the Bonn A nucleon-nucleon potential.
Abstract: The structure of the nuclei Pb is studied in terms of shell model employing a realistic effective interaction derived from the Bonn A nucleon-nucleon potential. The energy spectra, binding energies and electromagnetic properties are calculated and compared with experiment. A very good overall agreement is obtained. This evidences the reliability of our realistic effective interaction and encourages use of modern realistic potentials in shell-model calculations for heavy-mass nuclei.
TL;DR: In this article , a low-momentum interaction Vlow-k renormalized from the free CD-Bonn NN potential was obtained for two N =126 isotones 210Po and 212Rn using the nucleon-pair approximation with particle-hole excitations.
Abstract: In this paper, we study yrast states of two N=126 isotones 210Po and 212Rn using the nucleon-pair approximation with particle–hole excitations and using a low-momentum interaction Vlow–k renormalized from the free CD-Bonn NN potential. An overall good agreement with experimental level structures, B(E2)s, and B(E3)s, is achieved. We also calculate the probabilities of neutron particle–hole excitations in these yrast states, with a focus on negative-parity states, which reflect the roles played by the neutron negative-parity configurations of one-particle-one-hole excitations across the N=126 shell gap and the negative-parity configurations of valence proton particles involving the 0i13/2 orbit. The N=126 shell gap is discussed in terms of energies of neutron one-particle-one-hole excitations.