Background-enhanced axion force by axion dark matter
Abstract
We investigate the influence of axion dark matter as a background on the spin-independent axion forces between nucleons. Notably, we find that the potential for axion forces scales from 1 / r 3 in a vacuum-only context to 1 / r when the background effect is considered. Also, the magnitude of the axion force is substantially amplified in proportion to the number density of axion DM particles. These enhancements significantly improve the constraints on the axion decay constant by several orders of magnitude, across a broad range of axion masses, based on the fifth-force experiments such as the Casimirless and torsion balance tests. This suggests that such experiments are more effective than previously understood in detecting axions.
Fields of Study & Subjects
Dark Matter and Cosmic Phenomena
Atomic and Subatomic Physics Research
Computational Physics and Python Applications
Publication details
- Journal / source
- Physical review. D/Physical review. D.
- Publisher
- American Physical Society (APS)
- Volume
- 113
- Issue
- 11
- Publication date
- 21 April 2026
- Language
- EN