Proton spectral functions in finite nuclei based on the extended Brueckner–Hartree–Fock approach
Proton spectral functions in finite nuclei based on the extended Brueckner–Hartree–Fock approach
复制标题
基于扩展 Brueckner-HartreeFock 方法的有限核中的质子谱函数
DOI：
10.1088/1361-6471/aad8f5
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Wei Zuo
中科院分区：
文献类型：
--
作者：
Pei Wang;Peng Yin;Xinle Shang;Wei Zuo
我们在局域密度近似下计算了有限核中的质子谱函数，其中有限核和核物质的性质分别用Skyrme-Hartree-Fock方法和推广的Brueckner-Hartree-Fock方法计算。在小动量时，计算得到的标度谱函数与实验结果符合得很好，而在高动量时，两者之间的差异变得明显。此外，我们还得到了与实验相同的定标质子谱函数对靶的依赖关系。进一步的研究表明，质子的高密度区域的比例有一个显着的贡献，这种目标相关的行为，因为在不对称的核物质的光谱功能显着增加密度的函数。
We have calculated the proton spectral functions in finite nuclei based on the local density approximation where the properties of finite nuclei and nuclear matter are calculated by the Skyrme–Hartree–Fock method and the extended Brueckner–Hartree–Fock approach, respectively. The scaled spectral function from our calculation is in good agreement with experimental results at small momenta while the difference between them becomes apparent at high momenta. Besides, a target dependence of the scaled proton spectral function is also obtained in our calculation as was observed in experiment. A further investigation indicates that the proportion of the high density region of the proton has a significant contribution to this target-dependent behavior since the spectral function in asymmetric nuclear matter increases significantly as a function of density.