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arXiv 0809.3325nucl-th
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不同方法下非对称核物质的性质

Properties of asymmetric nuclear matter in different approaches

P. Gögelein, E. N. E. van Dalen, Kh. Gad, Kh. S. A. Hassaneen, H. Müther

摘要:

非对称核物质的性质是由各种多体方法导出的。这包括像Skyrme Hartree-Fock和相对论平均场方法这样的唯象方法,它们被调整以适应核的性质,以及更微观的尝试,如Brueckner-Hartree-Fock近似,自洽的格林函数方法和所谓的$V_{lowk}$方法,它们基于真实的核子-核子相互作用,再现核子-核子相移。这些微观方法的补充密度依赖的接触相互作用,以实现对称核物质的经验饱和性质。所有这些方法的预测讨论了核物质在高密度的$β$平衡。特别注意的行为的等值线分量的有效质量在富中子物质。

英文摘要:

Properties of asymmetric nuclear matter are derived from various many-body approaches. This includes phenomenological ones like the Skyrme Hartree-Fock and relativistic mean field approaches, which are adjusted to fit properties of nuclei, as well as more microscopic attempts like the Brueckner-Hartree-Fock approximation, a self-consistent Greens function method and the so-called $V_{lowk}$ approach, which are based on realistic nucleon-nucleon interactions which reproduce the nucleon-nucleon phase shifts. These microscopic approaches are supplemented by a density-dependent contact interaction to achieve the empirical saturation property of symmetric nuclear matter. The predictions of all these approaches are discussed for nuclear matter at high densities in $β$-equilibrium. Special attention is paid to behavior of the isovector component of the effective mass in neutron-rich matter.

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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