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arXiv 0812.2999nucl-th
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有限温度核性质的密度泛函方法和动量相关等矢量相互作用的作用

Density functional approach to finite temperature nuclear properties and the role of a momentum dependent isovector interaction

S. J. Lee, A. Z. Mekjian

摘要:

利用基于Skyrme相互作用的密度泛函方法,研究了非零温度下有限核的热力学性质。除了体积、对称性、表面和库仑效应外,动量相关的等矢量项的作用也在研究中。与机械和化学不稳定性以及液-气共存曲线相关的各种特征对Skyrme相互作用敏感。研究了修正的SKM($m^*=m$)相互作用中动量相关相互作用的等矢项和等oscillation项的分离效应。经常使用的Skyrme相互作用SLy 4是考虑的情况之一,并被证明有更好的功能,为中子星的研究,由于较大的对称能。

英文摘要:

Using a density functional approach based on a Skyrme interaction, thermodynamic properties of finite nuclei are investigated at non-zero temperture. The role of a momentum dependent isovector term is now studied besides volume, symmetry, surface and Coulomb effects. Various features associated with both mechanical and chemical instability and the liquid-gas coexistence curve are sensitive to the Skyrme interaction. The separated effects of the isoscalar term and the isovector term of momentum dependent interaction are studied for a modified SKM($m^*=m$) interaction. The frequently used Skyrme interaction SLy4 is one of the cases considered and is shown to have better features for neutron star studies due to a larger symmetry energy.

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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