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Searching for an Oscillating Massive Scalar Field as a Dark Matter Candidate Using Atomic Hyperfine Frequency
A Hees1,2, J Guéna1, M Abgrall1
1SYRTE, Observatoire de Paris, PSL Research University, CNRS, Sorbonne Universités, UPMC Univ. Paris 06, LNE, 61 avenue de l'Observatoire, 75014 Paris, France.
Physical Review Letters
|August 20, 2016
Summary
Scientists searched for dark matter using atomic clock data. No evidence was found, but the study provides stronger limits on a specific type of dark matter, improving previous constraints on its interaction with matter.
Area of Science:
- Atomic Physics
- Cosmology
- Particle Physics
Background:
- Dark matter constitutes a significant portion of the universe's mass.
- The nature of dark matter remains one of the most pressing mysteries in modern physics.
- Scalar fields are hypothetical particles that could potentially explain dark matter.
Purpose of the Study:
- To search for a massive scalar dark matter candidate using high-precision atomic clock data.
- To constrain the coupling of a scalar field to standard model particles.
- To improve upon existing limits on scalar dark matter interactions.
Main Methods:
- Utilized six years of accurate hyperfine frequency comparison data from the dual rubidium and caesium cold atom fountain FO2 at LNE-SYRTE.
- Analyzed the impact of a hypothetical scalar field on the rubidium/caesium hyperfine transition frequency ratio.
- Searched for harmonic variations indicative of scalar dark matter interactions.
Main Results:
- No signal consistent with a massive scalar dark matter candidate was detected.
- Improved constraints on the coupling of a putative scalar field to standard matter were established.
- Previous limits were improved by over an order of magnitude for couplings solely to electromagnetism.
Conclusions:
- The study found no evidence for the specific scalar dark matter candidate investigated.
- The research provides the most stringent limits to date on the coupling of scalar fields to standard matter, particularly electromagnetism.
- This work complements existing dark matter searches and advances our understanding of fundamental physics.
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