Screened Scalar Fields in the Laboratory and the Solar System

TL;DR

This paper reviews recent experimental constraints on screened scalar field models like chameleon, symmetron, and dilaton, which are candidates for dark energy and dark matter, using laboratory and solar system data.

Contribution

It provides the most recent combined experimental constraints on three prominent screened scalar field models relevant to dark energy and dark matter.

Findings

New constraints from qBOUNCE, neutron interferometry, and Lunar Laser Ranging.

Forecasted constraints for the upcoming CANNEX experiment.

Updated parameter bounds for chameleon, symmetron, and dilaton models.

Abstract

The last few decades have provided abundant evidence for physics beyond the two standard models of particle physics and cosmology. As is now known, the by far largest part of our universe's matter/energy content lies in the `dark' and consists of dark energy and dark matter. Despite intensive efforts on the experimental as well as the theoretical side, the origins of both are still completely unknown. Screened scalar fields have been hypothesized as potential candidates for dark energy or dark matter. Among these, some of the most prominent models are the chameleon, symmetron, and environment-dependent dilaton. In this article, we present a summary containing the most recent experimental constraints on the parameters of these three models. For this, experimental results have been employed from the qBOUNCE collaboration, neutron interferometry, and Lunar Laser Ranging (LLR), among others. In addition, constraints are forecast for the Casimir And Non Newtonian force EXperiment (CANNEX). Combining these results with previous ones, this article collects the most up-to-date constraints on the three considered screened scalar field models.