标题： 现实单体密度矩阵在原子核中的一致构造 显示英文标题

标题： Consistent Construction of Realistic One-Body Density Matrix in Nuclei

摘要： 基于自然轨道表示的表观方法被用于构建基态单体密度矩阵，该矩阵正确描述了$^{4}He$、$^{16}O$和$^{40}Ca$核的密度和动量分布。矩阵的参数通过最佳拟合实验密度分布和相关核子动量分布来确定。该方法能够获得自然轨道、占据概率以及费米海的耗尽情况。还计算了$^{4}He$、$^{16}O$和$^{40}Ca$核的基态特性，如均方根半径和平均动能。 显示英文摘要

摘要： A phenomenological method based on the natural orbital representation is applied to construct the ground state one-body density matrix which describes correctly both density and momentum distributions in $^{4}He$, $^{16}O$ and $^{40}Ca$ nuclei. The parameters of the matrix are fixed by a best fit to the experimental density distribution and to the correlated nucleon momentum distribution. The method allows the natural orbitals, the occupation probabilities and the depletion of the Fermi sea to be obtained. Ground-state characteristics of $^{4}He$, $^{16}O$ and $^{40}Ca$ nuclei, such as rms radii and mean kinetic energies are calculated, as well.