Enhanced effect of CP-violating nuclear magnetic quadrupole moment in HfF$^+$ molecule
Enhanced effect of CP-violating nuclear magnetic quadrupole moment in HfF$^+$ molecule
复制标题
HfF$^$分子中CP破坏核磁四极矩的增强效应
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
V. Flambaum
中科院分区：
文献类型：
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作者：
L. Skripnikov;A. Titov;V. Flambaum
HFF+阳离子是一种很有前途的寻找电子电偶极矩(EDM)的系统，E.Cornell小组也进行了相应的实验。在这里，我们从理论上研究阳离子，以寻找另一种T，P奇效应--核磁四极矩(MQM)与电子的相互作用。我们首次报道了分子参数$W_M=0.494$Frc{10^{33}mathm{HZ}{e~{]的精确从头算
这是用HF核的MQM来解释实验数据所必需的。为此，我们实现并应用了Dirac-Coulomb(-Gaun)和相对论有效核势相结合的方法来处理来自所有电子的电子关联效应，并使用具有单、双、三和非迭代四团簇振幅的耦合团簇方法CCSDT(Q)来考虑高阶关联效应。我们从T、P奇核力、质子和中子EDM的强度常数、QCD参数Heta和夸克色度EDM的角度讨论了对MQM效应的解释。
HfF$^+$ cation is a very promising system to search for the electron electric dipole moment (EDM), and corresponding experiment is carried out by E. Cornell group. Here we theoretically investigate the cation to search for another T,P-odd effect -- the nuclear magnetic quadrpole moment (MQM) interaction with electrons. We report the first accurate ab initio relativistic electronic structure calculations of the molecular parameter $W_M$=0.494 $frac{10^{33}mathrm{Hz}}{e~{
m cm}^2}$ that is required to interpret the experimental data in terms of the MQM of Hf nucleus. For this we have implemented and applied the combined Dirac-Coulomb(-Gaunt) and relativistic effective core potential approaches to treat electron correlation effects from all of the electrons and to take into account high-order correlation effects using the coupled cluster method with single, double, triple and noniterative quadruple cluster amplitudes, CCSDT(Q). We discuss interpretation of the MQM effect in terms of the strength constants of T,P-odd nuclear forces, proton and neutron EDM, QCD parameter $ heta$ and quark chromo-EDM.