The article "Screened Scalar Fields in the Laboratory and the Solar System" by Hauke Fischer, Christian Käding, and Mario Pitschmann reviews recent experimental constraints on screened scalar field models, particularly chameleons, symmetrons, and environment-dependent dilatons. These models are hypothesized as candidates for dark energy or dark matter, which together make up the majority of the universe's matter/energy content. Despite extensive theoretical and experimental efforts, the origins of dark energy and dark matter remain unknown. The authors present a comprehensive summary of the most up-to-date constraints on these models, utilizing results from various high-precision experiments such as the eBOUNCE collaboration, neutron interferometry, and Lunar Laser Ranging (LLR). They also forecast future constraints from the Casimir And Non Newtonian force EXperiment (CANNEX). Key findings include: - **Chameleon Model**: qBOUNCE has set weak constraints for specific parameter values but no constraints for others. CANNEX is expected to provide significant constraints, especially for small values of \( n \). - **Symmetron Model**: Existing constraints are primarily derived from tabletop experiments, with astrophysical experiments unable to impose constraints on certain parameter values. New constraints from qBOUNCE, neutron interferometry, and CANNEX are expected to be substantial. - **Environment-Dependent Dilaton Model**: Constraints from qBOUNCE, LLR, and neutron interferometry have been combined, with CANNEX expected to provide additional constraints. The article also discusses theoretical background, experimental methods, and detailed analyses of the constraints, highlighting improvements and discrepancies in previous studies. The authors emphasize the need for further theoretical advancements to accurately determine the coupling of neutrons to screened scalar fields.The article "Screened Scalar Fields in the Laboratory and the Solar System" by Hauke Fischer, Christian Käding, and Mario Pitschmann reviews recent experimental constraints on screened scalar field models, particularly chameleons, symmetrons, and environment-dependent dilatons. These models are hypothesized as candidates for dark energy or dark matter, which together make up the majority of the universe's matter/energy content. Despite extensive theoretical and experimental efforts, the origins of dark energy and dark matter remain unknown. The authors present a comprehensive summary of the most up-to-date constraints on these models, utilizing results from various high-precision experiments such as the eBOUNCE collaboration, neutron interferometry, and Lunar Laser Ranging (LLR). They also forecast future constraints from the Casimir And Non Newtonian force EXperiment (CANNEX). Key findings include: - **Chameleon Model**: qBOUNCE has set weak constraints for specific parameter values but no constraints for others. CANNEX is expected to provide significant constraints, especially for small values of \( n \). - **Symmetron Model**: Existing constraints are primarily derived from tabletop experiments, with astrophysical experiments unable to impose constraints on certain parameter values. New constraints from qBOUNCE, neutron interferometry, and CANNEX are expected to be substantial. - **Environment-Dependent Dilaton Model**: Constraints from qBOUNCE, LLR, and neutron interferometry have been combined, with CANNEX expected to provide additional constraints. The article also discusses theoretical background, experimental methods, and detailed analyses of the constraints, highlighting improvements and discrepancies in previous studies. The authors emphasize the need for further theoretical advancements to accurately determine the coupling of neutrons to screened scalar fields.