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Searching for new fundamental interactions via isotopic shifts in molecular lattice clocks

https://doi.org/10.1103/PhysRevResearch.6.033013

Tiberi, E ; Borkowski, M ; Iritani, B ; Moszynski, R ; Zelevinsky, T ( July 2024 , Physical Review Research)

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 the $keV / c^{2}$ 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.
Published by the American Physical Society2024
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Free, publicly-accessible full text available July 1, 2025
Accurate Determination of Blackbody Radiation Shifts in a Strontium Molecular Lattice Clock

https://doi.org/10.1103/PhysRevLett.131.263201

Iritani, B ; Tiberi, E ; Skomorowski, W ; Moszynski, R ; Borkowski, M ; Zelevinsky, T ( December 2023 , Physical Review Letters)

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Terahertz Vibrational Molecular Clock with Systematic Uncertainty at the 10−14 Level

https://doi.org/10.1103/PhysRevX.13.011047

Leung, K. H. ; Iritani, B. ; Tiberi, E. ; Majewska, I. ; Borkowski, M. ; Moszynski, R. ; Zelevinsky, T. ( March 2023 , Physical Review X)

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Ultracold 88 Sr 2 molecules in the absolute ground state

https://doi.org/10.1088/1367-2630/ac2dac

Leung, K. H. ; Tiberi, E. ; Iritani, B. ; Majewska, I. ; Moszynski, R. ; Zelevinsky, T. ( October 2021 , New Journal of Physics)
Limits on the stochastic gravitational wave background and prospects for single-source detection with GRACE Follow-On

https://doi.org/10.1103/PhysRevD.101.102004

Ross, M. P. ; Hagedorn, C. A. ; Shaw, E. A. ; Lockwood, A. L. ; Iritani, B. M. ; Lee, J. G. ; Venkateswara, K. ; Gundlach, J. H. ( May 2020 , Physical Review D)

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