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arXiv · 2605.10338

Fifth-Force Constraints from UV-Complete Scalar-Tensor Gravity

Alfio M. Bonanno·Emiliano M. Glaviano
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Abstract

We study an $O(N)$ scalar multiplet nonminimally coupled to gravity and follow its renormalization-group (RG) flow in the vicinity of an interacting, nonperturbatively UV-complete scaling regime of scalar-tensor theory. In the broken phase, the radial mode mediates a universal Yukawa correction to Newtonian gravity, parametrized by a strength $\alpha$ and range $\lambda$. Imposing UV completeness -- regular RG trajectories that reach the UV scaling regime -- restricts the infrared data to a finite wedge, which maps to a narrow region in the $(\alpha,\lambda)$ plane. Its complement is, therefore, ruled out by UV completeness alone. Remarkably, part of this theory-excluded domain lies below current experimental exclusion envelopes, so improved fifth-force searches can directly test and potentially falsify this class of UV-complete scalar-tensor models.

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BibTeXRIS

Alfio M. Bonanno, Emiliano M. Glaviano. 2026-05-11. Fifth-Force Constraints from UV-Complete Scalar-Tensor Gravity. https://doi.org/10.1103/q1gq-sgy3

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