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arXiv 1011.6475nucl-th
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具有表面峰值有效质量的核能泛函:整体性质

Nuclear energy functional with a surface-peaked effective mass: Global properties

Anthea Francesca Fantina, Jérôme Margueron, Paola Donati, Pierre M. Pizzochero

摘要:

为了提高费米面附近的态密度,提出了对核泛函的修正。这种修正的诱导效应是产生一个表面峰值有效质量,其平均值可以调整到接近费米能量的状态更接近1。本文研究了修正项对$^{40}$ Ca和$^{208}$ Pb的态密度、$^{120}$ Sn的低温配对和比热等核的整体性质的影响。在后者的应用中,采用了一个显式的温度依赖形式的校正项,它表明,临界温度降低了40-60 keV。

英文摘要:

A correction to the nuclear functional is proposed in order to improve the density of states around the Fermi surface. The induced effect of this correction is to produce a surface-peaked effective mass, whose mean value can be tuned to get closer to 1 for the states close to the Fermi energy. In this work we study the effect of the correction term on global properties of nuclei such as the density of states in $^{40}$Ca and $^{208}$Pb, pairing and specific heat at low temperature in $^{120}$Sn. In the latter application, an explicit temperature-dependent form of the correction term is employed and it is shown that the critical temperature is reduced by 40-60~keV.

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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