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Searching for ultralight scalar dark matter with clocks in Low Earth Orbit.

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Τίτλος: Searching for ultralight scalar dark matter with clocks in Low Earth Orbit.
Συγγραφείς: Brzeminski, Dawid, Pierce, Aaron
Πηγή: Journal of High Energy Physics; Aug2026, Vol. 2026 Issue 8, p1-35, 35p
Θεματικοί όροι: Dark matter, Atomic clocks, Space stations, Earth's orbit, Physical constants
Περίληψη: The density of ultralight dark matter can be modified in the vicinity of macroscopic bodies when the dark matter possesses quadratic couplings to the Standard Model. If these couplings are sufficiently strong, Earth's atmosphere acts to shield the dark matter, thereby limiting the effectiveness of laboratory-based experiments. Experiments performed at altitudes exceeding the dark matter de Broglie wavelength experience the same orbit-averaged field amplitude as in the absence of scattering. Quantum clocks are capable of detecting variations in fundamental parameters due to the dark matter background. If based on the International Space Station, they are therefore well-suited to probe dark matter masses mDM ≳ 10−9 eV. Moreover, when the dark matter de Broglie wavelength is smaller than Earth's radius (mDM ≳ 10−10 eV), the dark matter profile around Earth exhibits a dipole feature. In Low Earth Orbits this dipole temporally modulates potential dark matter signals. This provides a powerful cross-check of the orbit-averaged effect and can enhance the sensitivity of these experiments. We find optical clocks could give rise to world-leading constraints in some cases. Orbiting nuclear clocks could probe even more of the parameter space inaccessible to ground-based experiments. [ABSTRACT FROM AUTHOR]
Copyright of Journal of High Energy Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  – Url: https://dx.doi.org/doi:10.1007/JHEP08%282026%29161
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An: 196942006
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  Data: Searching for ultralight scalar dark matter with clocks in Low Earth Orbit.
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  Data: <searchLink fieldCode="AR" term="%22Brzeminski%2C+Dawid%22">Brzeminski, Dawid</searchLink><br /><searchLink fieldCode="AR" term="%22Pierce%2C+Aaron%22">Pierce, Aaron</searchLink>
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  Data: Journal of High Energy Physics; Aug2026, Vol. 2026 Issue 8, p1-35, 35p
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  Data: <searchLink fieldCode="DE" term="%22Dark+matter%22">Dark matter</searchLink><br /><searchLink fieldCode="DE" term="%22Atomic+clocks%22">Atomic clocks</searchLink><br /><searchLink fieldCode="DE" term="%22Space+stations%22">Space stations</searchLink><br /><searchLink fieldCode="DE" term="%22Earth's+orbit%22">Earth's orbit</searchLink><br /><searchLink fieldCode="DE" term="%22Physical+constants%22">Physical constants</searchLink>
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  Label: Abstract
  Group: Ab
  Data: The density of ultralight dark matter can be modified in the vicinity of macroscopic bodies when the dark matter possesses quadratic couplings to the Standard Model. If these couplings are sufficiently strong, Earth's atmosphere acts to shield the dark matter, thereby limiting the effectiveness of laboratory-based experiments. Experiments performed at altitudes exceeding the dark matter de Broglie wavelength experience the same orbit-averaged field amplitude as in the absence of scattering. Quantum clocks are capable of detecting variations in fundamental parameters due to the dark matter background. If based on the International Space Station, they are therefore well-suited to probe dark matter masses m<subscript>DM</subscript> ≳ 10<superscript>−9</superscript> eV. Moreover, when the dark matter de Broglie wavelength is smaller than Earth's radius (m<subscript>DM</subscript> ≳ 10<superscript>−10</superscript> eV), the dark matter profile around Earth exhibits a dipole feature. In Low Earth Orbits this dipole temporally modulates potential dark matter signals. This provides a powerful cross-check of the orbit-averaged effect and can enhance the sensitivity of these experiments. We find optical clocks could give rise to world-leading constraints in some cases. Orbiting nuclear clocks could probe even more of the parameter space inaccessible to ground-based experiments. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of High Energy Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/JHEP08(2026)161
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      – Code: eng
        Text: English
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        PageCount: 35
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      – SubjectFull: Dark matter
        Type: general
      – SubjectFull: Atomic clocks
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      – SubjectFull: Space stations
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      – SubjectFull: Earth's orbit
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      – SubjectFull: Physical constants
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              Text: Aug2026
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