Searching for New Fundamental Interactions via Isotopic Shifts in Molecular Lattice Clocks

Abstract

Precision measurements with ultracold atoms and molecules are primed to probe beyond-the-Standard Model physics. Isotopologues of homonuclear molecules are a natural testbed for new Yukawa-type mass-dependent forces at nanometer scales, complementing existing mesoscopic-body and neutron scattering experiments. Here we propose using isotopic shift measurements in molecular lattice clocks to constrain these new interactions from new massive scalar particles in keV$/c^2$ range: the new interaction would impart an extra isotopic shift to molecular levels on top of one predicted by the Standard Model. For the strontium dimer, a Hz-level agreement between experiment and theory could constrain the coupling of the new particles to hadrons by up to an order-of-magnitude over the most stringent existing experiments.

7 pages, 4 figures, submitted

References in corpus (20)

• Frequency ratio of two optical clock transitions in ${}^{171}$Yb${}^{+}$ and constraints on the time-variation of fundamental constants
• Light Dark Matter: Models and Constraints
• Improved limit on a temporal variation of $m_p/m_e$ from comparisons of Yb${}^{+}$ and Cs atomic clocks
• Stellar cooling bounds on new light particles: plasma mixing effects
• Neutron scattering and extra short range interactions
• Improved limits on the coupling of ultralight bosonic dark matter to photons from optical atomic clock comparisons
• Creation of ultracold Sr2 molecules in the electronic ground state
• Constraints on New Gravitylike Forces in the Nanometer Range
• Constraints on new interactions from neutron scattering experiments
• Rovibrational dynamics of the strontium molecule in the A^1Σ_u^+, c^3Π_u, and a^3Σ_u^+ manifold from state-of-the-art ab initio calculations
• Precision determination of isotope shifts in ytterbium and implications for new physics
• Observation of non-linearity of generalized King plot in the search for new boson
• Mass scaling and non-adiabatic effects in photoassociation spectroscopy of ultracold strontium atoms
• Deviations from Born-Oppenheimer mass scaling in spectroscopy and ultracold molecular physics
• A terahertz vibrational molecular clock with systematic uncertainty at the $10^{-14}$ level
• Dark Matter Axions, Non-Newtonian Gravity and Constraints on them from Recent Measurement of the Casimir Force in the Micrometer Separation Range
• Effects of gravity in extra dimensions in atomic phenomena
• The Casimir force, causality and the Gurzhi model
• Accurate Determination of Blackbody Radiation Shifts in a Strontium Molecular Lattice Clock
• Reexamination of the ground state Born-Oppenheimer Yb${}_2$ potential

Cited by in corpus (3)

• Isotopologue-selective laser cooling of molecules
• Two-photon cooling of calcium atoms
• Ground-state selection via many-body superradiant decay