Prospects for optical clocks combining high sensitivity to new physics with insensitivity to perturbations; the case of Sb${}^{+}$, Au${}^{+}$, and Hg${}^{2+}$

Abstract

Our study is motivated by the prospect of several metastable states in the Sb${}^{+}$, Au${}^{+}$, and Hg${}^{2+}$ ions being used as possible candidates for optical clocks. We calculate several atomic properties relevant to the development of optical clocks for those clock transitions using two different approaches of relativistic many-body calculations, configuration interaction with single-double coupled-cluster (CI+SD) method, and configuration interaction with perturbation theory (CIPT) method. Our results demonstrate that the relative black body radiation shifts for these transitions are small, $\sim 10^{-16}$. It is also found that there is considerable sensitivity to new physics, as evidenced by a significant enhancement of the effect of the time variation of the fine structure constant $\alpha$ on the frequencies of the clock transitions. The corresponding factor ranges from -5.56 to 2.20. Our results are compared with available previous data.

arXiv comment10 pages, 1 figure

References in corpus (24)

• Atomic clock performance beyond the geodetic limit
• An ${}^{27}$Al${}^{+}$ quantum-logic clock with systematic uncertainty below $10^{-18}$
• Single-Ion Atomic Clock with $3\times 10^{-18}$ Systematic Uncertainty
• Frequency ratio of two optical clock transitions in ${}^{171}$Yb${}^{+}$ and constraints on the time-variation of fundamental constants
• Space-Time Variation of Physical Constants and Relativistic Corrections in Atoms
• Calculations of the Relativistic Effects in Many-Electron Atoms and Space-Time Variation of Fundamental Constants
• Multipolar theory of black-body radiation shift of atomic energy levels and its implications for optical lattice clocks
• Frequency ratio of Yb and Sr clocks with $5\times 10^{-17}$ uncertainty at 150 s averaging time
• Probing new light force-mediators by isotope shift spectroscopy
• Electric dipole moments of Hg, Xe, Rn, Ra, Pu, and TlF induced by the nuclear Schiff moment and limits on time-reversal violating interactions
• Search for variation of the fundamental constants in atomic, molecular and nuclear spectra
• Dynamic polarizabilities and related properties of clock states of ytterbium atom
• Isotope shift, non-linearity of King plots and the search for new particles
• Sympathetic Cooling of Mixed Species Two-Ion Crystals for Precision Spectroscopy
• Constraining New Physics Models with Isotope Shift Spectroscopy
• Additional clock transitions in neutral ytterbium bring new possibilities for testing physics beyond the Standard Model
• Combining configuration interaction with perturbation theory for atoms with large number of valence electrons
• On the use of the $V^{N-M}$ approximation in atomic calculations
• Atomic clocks with suppressed blackbody radiation shift
• Combination of the single-double coupled cluster and the configuration interaction methods; application to barium, lutetium and their ions
• Nuclear deformation as a source of the non-linearity of King plot in the Yb${}^{+}$ ion
• Atomic calculations and search for variation of the fine structure constant in quasar absorption spectra
• Time keeping and searching for new physics using metastable states of Cu, Ag and Au
• Atomic clocks highly sensitive to the variation of the fine structure constant based on Hf II, Hf IV, and W VI ions