Fifth-force screening around extremely compact sources

Burrage, Clare; Elder, Benjamin; Millington, Peter; Saadeh, Daniela; Thrussell, Ben

Abstract

Many non-linear scalar field theories possess a screening mechanism that can suppress any associated fifth force in dense environments. As a result, these theories can evade local experimental tests of new forces. Chameleon-like screening, which occurs because of non-linearities in the scalar potential or the coupling to matter, is well understood around extended objects. However, many experimental tests of these theories involve objects with spatial extent much smaller than the scalar field's Compton wavelength, and which could therefore be considered point-like. In this work, we determine how the fifth forces are screened in the limit that the source objects become extremely compact.

Citation

Burrage, C., Elder, B., Millington, P., Saadeh, D., & Thrussell, B. (2021). Fifth-force screening around extremely compact sources. Journal of Cosmology and Astroparticle Physics, 2021(August 2021), Article JCAP08(2021)052. https://doi.org/10.1088/1475-7516/2021/08/052

• Journal Article Type: Article
• Acceptance Date: Jul 19, 2021
• Online Publication Date: Aug 23, 2021
• Publication Date: Aug 23, 2021
• Deposit Date: Jul 30, 2021
• Publicly Available Date: Aug 23, 2021
• Journal: Journal of Cosmology and Astroparticle Physics
• Electronic ISSN: 1475-7516
• Peer Reviewed: Peer Reviewed
• Volume: 2021
• Issue: August 2021
• Article Number: JCAP08(2021)052
• DOI: https://doi.org/10.1088/1475-7516/2021/08/052
• Public URL: https://nottingham-repository.worktribe.com/output/5891396
• Publisher URL: https://iopscience.iop.org/article/10.1088/1475-7516/2021/08/052