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首页> 外文期刊>Physics of atomic nuclei >Neutron-Proton Effective Mass Splitting in Terms of Symmetry Energy and Its Density Slope
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Neutron-Proton Effective Mass Splitting in Terms of Symmetry Energy and Its Density Slope

机译：根据对称能及其密度斜率的中子-质子有效质量分裂

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摘要

Using a simple density-dependent finite-range effective interaction having Yukawa form, the density dependence of isoscalar and isovector effective masses is studied. The isovector effective mass is found to be different for different pairs of like and unlike nucleons. Using HVH theorem, the neutron-proton effective mass splitting is represented in terms of symmetry energy and its density slope. It is again observed that the neutron-proton effective mass splitting has got a positive value when isoscalar effective mass is greater than the isovector effective mass and has a negative value for the opposite case. Furthermore, the neutron-proton effective mass splitting is found to have a linear dependence on asymmetry beta. The second-order symmetry potential has a vital role in the determination of density slope of symmetry energy but it does not have any contribution on neutron-proton effective mass splitting. The finite-range effective interaction is compared with the SLy2, SKM, f(-), f(0), and f(+) forms of interactions.
机译：使用具有Yukawa形式的简单的依赖密度的有限范围有效相互作用，研究了等量和等矢量有效质量的密度依赖。发现对于相似的和不同的核子对，等矢量有效质量是不同的。使用HVH定理，中子-质子有效质量分裂用对称能及其密度斜率表示。再次观察到，当等量有效质量大于等矢量有效质量时，中子-质子有效质量分裂为正值，反之则为负值。此外，发现中子-质子有效质量分裂对不对称β具有线性依赖性。二阶对称势在对称能量密度斜率的确定中起着至关重要的作用，但对中子-质子有效质量分裂没有任何贡献。将有限范围有效相互作用与SLy2，SKM，f（-），f（0）和f（+）形式的相互作用进行比较。

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