Electric Dipole Moment Enhancement Factor of Thallium

Abstract

The goal of this work is to resolve the present controversy in the value of the electric dipole moment (EDM) enhancement factor of Tl. We carry out several calculations by different high-precision methods, study previously omitted corrections, as well as test our methodology on other, parity conserving, quantities. We find the EDM enhancement factor of Tl to be equal to -573(20). This value is 20% larger than the recently published result of Nataraj et al. [Phys. Rev. Lett. 106, 200403 (2011)], but agrees very well with several earlier results.

Atomic properties of superheavy elements No, Lr, and Rf

“…This CI+all-order method yielded accurate atomic properties for a number of divalent systems and trivalent Tl [18][19][20][21]. It has been recently applied to the calculations of four-electron systems for the first time (Sn-like ions) [22].…”

Double-core-polarization contribution to atomic parity-nonconservation and electric-dipole-moment calculations

“…In our early calculations of the PNC in thallium [13] it was treated as a mono-valence system and the DCP contribution was included. Recent calculations of the EDM enhancement factor [28,31] used the CI approach, the calculations of the Tl EDM based on the coupled-cluster approach [14,32] seems to include the DCP contribution too by introducing the perturbed excitation operators T 1 and T 2 (see [14] for detailes). …”

Polarizabilities, Stark shifts, and lifetimes of the In atom

“…It has been tested on a variety of divalent systems [7][8][9][10][11] and applied to Tl [12]. However, there are far less experimental benchmark experiments for the properties of the divalent and trivalent systems in comparison with the alkalis.…”