标题： 来自低分辨率波函数的高分辨率动量分布 显示英文标题

标题： High-resolution momentum distributions from low-resolution wave functions

摘要： 用单粒子算符计算得到的核子动量分布随着所用哈密顿量的分辨率尺度（以及方案）而变化。 对于高分辨率势（如Argonne $v_{18}$ (AV18)），存在一个高动量尾部，反映了核波函数中的短程关联，在较软、分辨率较低的相互作用中这一尾部会减弱甚至消失。 我们探讨了相似性重正化群（SRG）是否可以用来定量地从变分蒙特卡洛方法中所有动量点上的高分辨率分布出发，使用SRG演化算符和经验拟合的单粒子轨道，而不是完整的多体波函数重正化群演化，来再现这些高分辨率分布。这种方法的目标是能够对更广泛的核以及其它相互作用计算出高分辨率分布，并且为实验的唯象分析提供联系。 显示英文摘要

摘要： Nucleon momentum distributions calculated with a common one-body operator vary with the resolution scale (and scheme) of the Hamiltonian used. For high-resolution potentials such as Argonne $v_{18}$ (AV18) there is a high-momentum tail, reflecting short-range correlations in the nuclear wave function, which is reduced or absent for softer, lower-resolution interactions. We explore if the similarity renormalization group (SRG) can be used to quantitatively reproduce the high-resolution distributions from variational Monte Carlo at all momenta using SRG-evolved operators and empirically fit single-particle orbitals rather than a full RG evolution of many-body wave functions. The goal of this approach is to enable calculations of high-resolution distributions for a wider range of nuclei as well as for other interactions, and provides connections to phenomenological analyses of experiments.