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arXiv 1010.4583nucl-th
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被捕获在外场中的冷中子

Cold neutrons trapped in external fields

S. Gandolfi, J. Carlson, Steven C. Pieper

摘要:

非均匀中子物质的性质对丰中子核和中子星壳的物理性质至关重要。计算技术的进步现在使我们能够准确地确定许多中子的结合能和密度,这些中子通过现实的微观相互作用相互作用并被限制在外场中。我们进行计算不同的外部领域,并在几个壳放置重要的约束不均匀的中子物质,因此大的同位旋极限的核能密度泛函,用于预测重核和中子星地壳的属性。我们发现微观计算和电流密度泛函之间的重要差异,特别是矢量梯度项显着更排斥比传统模型,自旋轨道和配对力相对较弱。

英文摘要:

The properties of inhomogeneous neutron matter are crucial to the physics of neutron-rich nuclei and the crust of neutron stars. Advances in computational techniques now allow us to accurately determine the binding energies and densities of many neutrons interacting via realistic microscopic interactions and confined in external fields. We perform calculations for different external fields and across several shells to place important constraints on inhomogeneous neutron matter, and hence the large isospin limit of the nuclear energy density functionals that are used to predict properties of heavy nuclei and neutron star crusts. We find important differences between microscopic calculations and current density functionals; in particular the isovector gradient terms are significantly more repulsive than in traditional models, and the spin-orbit and pairing forces are comparatively weaker.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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