论文标题
H $ _2 $，D $ _2 $和HD分子和Deuteron Quadrupole Moment的第一个旋转水平的超细结构
Hyperfine structure of the first rotational level in H$_2$, D$_2$ and HD molecules and the deuteron quadrupole moment
论文作者
论文摘要
我们在第一个旋转状态下对H $ _2 $，D $ _2 $和HD分子的四体性结构进行四体计算，并确定Deuteron Electric Quadrupole矩$ q_d = 0.285 = 0.285 \，699（15）（15）（18）$ fm $^2 $的准确值。我们对超精细参数的结果与N.F.几十年前进行的当前最准确的分子梁磁共振测量非常吻合。拉姆西和同事。它们还表明了先前被忽视的非绝热作用的重要性。此外，基于手性有效场理论的最新计算$ q_d $的计算非常好，尽管精确得多，但表明了核子相互作用的旋转依赖性在核的准确描述中的重要性。
We perform the four-body calculation of the hyperfine structure in the first rotational state $J=1$ of the H$_2$, D$_2$, and HD molecules and determine the accurate value for the deuteron electric quadrupole moment $Q_d = 0.285\,699(15)(18)$ fm$^2$ in significant disagreement with former spectroscopic determinations. Our results for the hyperfine parameters agree very well with the currently most accurate molecular-beam magnetic resonance measurement performed several decades ago by N.F. Ramsey and coworkers. They also indicate the significance of previously neglected nonadiabatic effects. Moreover, a very good agreement with the recent calculation of $Q_d$ based on the chiral effective field theory, although much less accurate, indicates the importance of the spin dependence of nucleon interactions in the accurate description of nuclei.
