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<p>Shifts in the frequency of atomic spectral lines between different isotopes can be used to reveal subtle changes in the properties of nuclei. With the advent of ultra-high-precision optical spectroscopy, it is also possible to use these isotope shifts to probe physics beyond the standard model, specifically whether a fifth force exists. This Perspective outlines the progress and challenges of these studies and provides an outlook on future possibilities.</p>

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Precision isotope-shift spectroscopy for new physics searches and nuclear insights

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Julian C. Berengut,
  • Cédric Delaunay

摘要

Shifts in the frequency of atomic spectral lines between different isotopes can be used to reveal subtle changes in the properties of nuclei. With the advent of ultra-high-precision optical spectroscopy, it is also possible to use these isotope shifts to probe physics beyond the standard model, specifically whether a fifth force exists. This Perspective outlines the progress and challenges of these studies and provides an outlook on future possibilities.