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arXiv · 2511.08448

Bounds on screened dark energy from near-Earth space-based measurements

Fabiano Feleppa·Welmoed Marit de Graaf·Philippe Brax·Gaetano Lambiase
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Abstract

We test screened dark energy with near-Earth, space-based measurements. In a post-Newtonian framework, we compute leading corrections to geodetic precession (Gravity Probe B), LAGEOS-2 pericenter advance, and the Sagnac delay in a prospective orbital configuration, yielding bounds on chameleon, symmetron, and dilaton models. LAGEOS-2 sets the strongest Earth-orbit limits on symmetron and dilaton, while a Sagnac setup at the projected sensitivity of state-of-the-art space clocks gives the tightest chameleon constraint. These results show that low-density, space-based experiments sensitively probe screened dark energy and exclude previously allowed parameter space. Notably, at nuclear-clock precision $\mathcal{O}\big(10^{-19}\big)$, a Sagnac test would exclude the entire chameleon parameter space considered.

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Fabiano Feleppa, Welmoed Marit de Graaf, Philippe Brax, Gaetano Lambiase. 2025-11-11. Bounds on screened dark energy from near-Earth space-based measurements. https://arxiv.org/abs/2511.08448

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