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April 14, 2026Open Access

Algebraic Bounds on Chameleon Screening and Universal-Coupling Limits for Satellite Tests of Gravity

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DFDarren Dominic Fabri

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Overview

This publication demonstrates algebraic bounds on chameleon screening in satellite tests of gravity, suggesting new theoretical insights.

Key Points

  • The aim is to understand the implications of chameleon screening and universal coupling on gravity measurements in space.
  • Established algebraic solutions versus phenomenological approximations.
  • Derived the density-dependent minimum using the Lambert-W0 function.
  • Analyzed vacuum limits for scalar field screening factors.
  • Showed that the differential signal in the MICROSCOPE mission vanishes under specific conditions.
  • Provided an upper bound on Earth's screening factor as less than 2.1 x 10^-7.
  • Demonstrated that generating a non-zero signal requires extending beyond standard coupling models.

Cite This Study

Darren Dominic Fabri (2026) studied this question.

synapsesocial.com/papers/69ddd9e1e195c95cdefd7522https://doi.org/10.5281/zenodo.19528455
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