Self-interaction errors in nuclear energy density functionals
Self-interaction errors in nuclear energy density functionals
复制标题
核能量密度泛函中的自相互作用误差
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
N. Chamel
中科院分区：
文献类型：
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作者：
N. Chamel
当应用于单个核子时，核能密度泛函可以产生非零内能，从而暗示核子与自身相互作用。它示出了如何避免这种非物理功能的半局部唯象泛函包含所有可能的双线性组合的局部密度和电流的二阶导数。在这个快速通信中概述的方法可以很容易地扩展到包含高阶项的泛函，并可以作为约束泛函的时间奇数部分的指导。
When applied to a single nucleon, nuclear energy density functionals may yield a nonvanishing internal energy thus implying that the nucleon is interacting with itself. It is shown how to avoid this unphysical feature for semilocal phenomenological functionals containing all possible bilinear combinations of local densities and currents up to second order in the derivatives. The method outlined in this Rapid Communication could be easily extended to functionals containing higher-order terms, and could serve as a guide for constraining the time-odd part of the functional.