Skyrme interaction and nuclear matter constraints
Skyrme interaction and nuclear matter constraints
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DOI：
10.1103/physrevc.85.035201
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发表时间：
2012-03-05
影响因子：
3.1
通讯作者：
Stevenson, P. D.
中科院分区：
文献类型：
--
作者：
Dutra, M.;Lourenco, O.;Stevenson, P. D.
本文提出了一个详细的评估能力的240 Skyrme相互作用参数集在文献中，以满足一系列的标准来自核物质的宏观性质在核饱和密度附近的零温度和它们的密度依赖性，来自液滴模型，在实验与巨共振和重离子碰撞。我们的目标是确定这些参数化，最好满足目前的理解核物质的物理在广泛的应用。在240个模型中，只有16个模型满足所有这些约束。此外，更微观的，对中子和质子有效质量β平衡物质的密度依赖性的约束，对称和纯中子核物质的朗道参数，以及高质量和低质量冷中子星的观测数据进一步减少了这个数字为5，一个非常小的建议Skyrme参数化组，用于核物质相关的可观测量的Skyrme相互作用的未来应用。所有Skyrme模型考虑的个别约束的部分履行的全部信息。结果进行了讨论的Skyrme相互作用的物理解释和它的使用在平均场模型的有效性。未来的工作应用的Skyrme力，选择的基础上的变量的核物质，在Hartree-Fock计算有限核的性质，概述。
This paper presents a detailed assessment of the ability of the 240 Skyrme interaction parameter sets in the literature to satisfy a series of criteria derived from macroscopic properties of nuclear matter in the vicinity of nuclear saturation density at zero temperature and their density dependence, derived by the liquid-drop model, in experiments with giant resonances and heavy-ion collisions. The objective is to identify those parametrizations which best satisfy the current understanding of the physics of nuclear matter over a wide range of applications. Out of the 240 models, only 16 are shown to satisfy all these constraints. Additional, more microscopic, constraints on the density dependence of the neutron and proton effective mass beta-equilibrium matter, Landau parameters of symmetric and pure neutron nuclear matter, and observational data on high-and low-mass cold neutron stars further reduce this number to 5, a very small group of recommended Skyrme parametrizations to be used in future applications of the Skyrme interaction of nuclear-matter-related observables. Full information on partial fulfillment of individual constraints by all Skyrme models considered is given. The results are discussed in terms of the physical interpretation of the Skyrme interaction and the validity of its use in mean-field models. Future work on application of the Skyrme forces, selected on the basis of variables of nuclear matter, in the Hartree-Fock calculation of properties of finite nuclei, is outlined.