Self-consistent Hartree description of deformed nuclei in a relativistic quantum field theory.
Self-consistent Hartree description of deformed nuclei in a relativistic quantum field theory.
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DOI：
10.1103/physrevc.36.354
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发表时间：
1987-07
期刊：
影响因子：
--
通讯作者：
Price;Walker
中科院分区：
文献类型：
--
作者：
Price;Walker
从拉格朗日场理论出发，利用平均场近似，自洽地计算了非球面（偶偶）核的相对论哈特里轨道。该模型中的所有参数都是由无限核物质的性质决定的，因此在计算轨道时不存在可调整的参数。能级、均方根半径和四极矩与早期的非相对论性计算和实验在定性上一致；然而，总体变形（由自洽性确定）比实验和非相对论计算得到的变形要小一些。这种差异可能是由于相对论平均场计算具有较大的压缩性。这些轨道和自洽确定的平均场为详细研究可压缩性和其他相对论效应提供了一个框架。
Relativistic Hartree orbitals for nonspherical (even-even) nuclei have been calculated self-consistently from a Lagrangian field theory using the mean field approximation. All parameters in this model are determined from the properties of infinite nuclear matter, so there are no parameters which can be adjusted in the calculation of the orbitals. The energy levels, rms radii, and quadrupole moments are in qualitative agreement with earlier nonrelativistic calculations and with experiment; however, the overall deformations (which are fixed by the self-consistency) are somewhat smaller than those obtained experimentally and from nonrelativistic calculations. The difference may be due to the large compressibility characteristic of relativistic mean field calculations. These orbitals and the self-consistently determined mean fields provide a framework for a detailed investigation of the compressibility as well as other relativistic effects.