Shell model Monte Carlo approach: the heavy nuclei

被引:1
|
作者
Alhassid, Y. [1 ]
Fang, L. [1 ]
Nakada, H. [2 ]
机构
[1] Yale Univ, Sloane Phys Lab, Ctr Theoret Phys, New Haven, CT 06520 USA
[2] Chiba Univ, Dept Phys, Grad Sch Sci, Inage Ku, Chiba 2638522, Japan
关键词
LEVEL DENSITIES;
D O I
10.1088/1742-6596/267/1/012033
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The auxiliary-field Monte Carlo (AFMC) method, also known as the shell model Monte Carlo (SMMC), enables us to calculate microscopically statistical and collective properties of nuclei in the presence of strong correlations. These calculations can be carried out in shell model spaces that are many orders of magnitude larger than spaces that can be treated with conventional diagonalization methods. A recent major development has been the extension of the AFMC approach to heavy nuclei. Such applications to heavy nuclei have been a major challenge. On the conceptual level, a crucial question is whether a truncated spherical shell model Hamiltonian can describe the proper collectivity observed in heavy nuclei and, in particular, the rotational character of strongly deformed nuclei. On the technical level, the low excitation energies make it necessary to perform calculations down to much lower temperatures. At such low temperatures the propagator becomes ill-conditioned and requires the introduction of stabilization methods.
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页数:6
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