Presents a scalar-tensor model, analyzing its effects on cosmology and providing observational constraints.
This paper presents a minimal scalar–tensor extension of General Relativity consisting of a single real scalar field non-minimally coupled to curvature, introducing only two parameters: scalar mass mϕ and dimensionless coupling α. The full field equations are derived, weak-field and cosmological limits analyzed, and stability checked. Observational constraints are discussed, including solar system tests, cosmological equation-of-state deviations, structure growth rate, and possible scalar gravitational wave polarization. The model is mathematically consistent, minimal, and falsifiable.
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Myomin Aung (2026) studied this question.
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