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arXiv 1804.08027nucl-th
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局域手征相互作用的单核子和双核子动量分布

Single- and two-nucleon momentum distributions for local chiral interactions

D. Lonardoni, S. Gandolfi, X. B. Wang, J. Carlson

摘要:

本文用量子蒙特卡罗方法计算了$A\le16$中选定原子核的单核子和双核子动量分布。我们采用本地手性相互作用在次-主导顺序。我们发现在低动量与单核子动量分布的唯象势。在低相对动量$q$和低质心动量$Q$的情况下,积分的双核子动量分布也是一致的。我们提供的两个核子的动量分布作为$q$和$Q$的函数的结果。对于背对背$(Q=0)$对,在$q=2\,\rm fm^{-1}$附近的$pn$与$pp$对的大比例被证实高达$^{16}$ 0,并且结果与从可用的实验数据中提取的那些结果相容。

英文摘要:

We present quantum Monte Carlo calculations of the single- and two-nucleon momentum distributions in selected nuclei for $A\le16$. We employ local chiral interactions at next-to-next-to-leading order. We find good agreement at low momentum with the single-nucleon momentum distributions derived for phenomenological potentials. The same agreement is found for the integrated two-nucleon momentum distributions at low relative momentum $q$ and low center-of-mass momentum $Q$. We provide results for the two-nucleon momentum distributions as a function of both $q$ and $Q$. The large ratio of $pn$ to $pp$ pairs around $q=2\,\rm fm^{-1}$ for back-to-back $(Q=0)$ pairs is confirmed up to $^{16}$O, and results are compatible with those extracted from available experimental data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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