Fifth-Force Constraints from UV-Complete Scalar-Tensor Gravity
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 α_{Y} and range λ_{Y}. 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 (α_{Y},λ_{Y}) 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.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Noncommutative and Quantum Gravity Theories
Black Holes and Theoretical Physics
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 20
- Pages
- 201501–201501
- Publication date
- 1 May 2026
- Language
- EN