Hide and Seek: Screened Scalar Fields in Hydrogen and Muonium - Archive ouverte HAL
Article Dans Une Revue Physical Review D Année : 2023

Hide and Seek: Screened Scalar Fields in Hydrogen and Muonium

Résumé

We compute bounds on screened scalar field theories from hydrogen-like systems. New light scalar fields generically have a direct coupling to matter. Such a coupling is strongly constrained by myriad experimental measurements. However, certain theories possess a {\it screening mechanism} that allows the effects of this coupling to weaken dynamically, and to evade many such bounds. We compute the perturbations to the energy levels of hydrogen-like systems due to screened scalar fields. We then use this result in two ways. First, we compute bounds from hydrogen spectroscopy, finding significantly weaker bounds than have been reported before as screening effects were overlooked. Second, we show that muonium is an intrinsically much more sensitive probe of screened scalar fields. For chameleon models, muonium experiments probe a large part of the parameter space that is as yet unexplored by low energy physics and has so far only been tested by high-energy particle physics experiments.

Dates et versions

hal-03759866 , version 1 (24-08-2022)

Identifiants

Citer

Philippe Brax, Anne-Christine Davis, Benjamin Elder. Hide and Seek: Screened Scalar Fields in Hydrogen and Muonium. Physical Review D, 2023, 107 (4), pp.044008. ⟨10.1103/PhysRevD.107.044008⟩. ⟨hal-03759866⟩
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