Ab-Initio No-Core Shell Model.

[摘要] We discuss the no-core shell model approach, an ab initio method with effective Hamiltonians derived from realistic nucleon-nucleon (NN) potentials as a function of the finite harmonic-oscillator (HO) basis space. We present results for three and four nucleon systems in model spaces that include up to 50hOmega and 18hOmega HO excitations, respectively. For these light systems we are in agreement with results obtained by other exact methods. Also, we calculate the properties of 6Li and 6He in model spaces up to lOhOmega, and of (sup 12)C for model spaces up to 6hOmega.

[发布机构] Technical Information Center Oak Ridge Tennessee

[学科分类] 工程和技术（综合）

[关键词] Ab initio;Excitation;Hamiltonians;Motivation;Theory