VARIATIONAL CALCULATIONS OF FEW-BODY NUCLEI

被引:178
作者
WIRINGA, RB
机构
[1] Physics Division, Argonne National Laboratory, Argonne
来源
PHYSICAL REVIEW C | 1991年 / 43卷 / 04期
关键词
D O I
10.1103/PhysRevC.43.1585
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
Improved variational wave functions for use in microscopic studies of few-body nuclei are presented. The trial functions are constructed from pair-correlation operators, which include central, spin, isospin, tensor, and spin-orbit components, and triplet-correlation operators, which include components induced by three-nucleon potentials. Energy expectation values are calculated using Metropolis Monte Carlo integration. Variational parameter searches are made using energy differences to reduce the effect of statistical fluctuations on the choice of optimal trial functions. Results are reported for ground-state binding energies of H-3 and He-4 using the Reid upsilon-8 and Argonne upsilon-14 two-nucleon potentials, and Argonne upsilon-14 with the Tucson-Melbourne, Urbana VII, and Urbana VIII three-nucleon potentials. The variational binding energies are typically 3-4% above available Faddeev and Green's-function Monte Carlo results. Nucleon density distributions and elastic electromagnetic form factors are also presented. Extension of these wave functions to larger nuclei such as He-5, He-6, and Li-6 is discussed.
引用
收藏
页码:1585 / 1598
页数:14
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