Electric dipole moments of superheavy elements - A case study on copernicium

Abstract

The multiconfiguration Dirac-Hartree-Fock (MCDHF) method was employed to calculate atomic electric dipole moments (EDM) of the superheavy element copernicium (Cn, $Z=112$). The EDM enhancement factors of Cn, here calculated for the first time, are about one order of magnitude larger than those of Hg. The exponential dependence of enhancement factors on atomic number $Z$ along group 12 of the periodic table was derived from the EDMs of the entire homolog series, ${}_{30}^{69}$Zn, ${}_{48}^{111}$Cd, ${}_{80}^{199}$Hg, ${}_{112}^{285}$Cn, and ${}_{162}^{482}$Uhb. These results show that superheavy elements with sufficiently large half-lives are good candidates for EDM searches.

10 pages, 3 figures

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• Model-independent determinations of the electron EDM and the role of diamagnetic atoms
• Electric dipole moment of ${}^{199}$Hg atom from P, CP-odd electron-nucleon interaction
• Large-scale shell-model calculations of nuclear Schiff moments of ${}^{129}$Xe and ${}^{199}$Hg
• Electric dipole moments due to nuclear Schiff moment interactions: A reassessment of the atoms ${}^{129}$Xe, ${}^{199}$Hg, and the molecule ${}^{205}$TlF
• The role of relativistic many-body theory in probing new physics beyond the standard model via the electric dipole moments of diamagnetic atoms
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