Search for environment-dependent dilatons

Abstract

The environment-dependent dilaton field is a well-motivated candidate for dark energy and naturally arises in the strong coupling limit of string theory. In this article, we present the very first experimental constraints on the parameters of this model. For this, we employ data obtained from the qBounce collaboration and the Lunar Laser Ranging (LLR) experiment. Furthermore, we forecast expected exclusion plots for the Casimir And Non Newtonian force EXperiment (Cannex) soon to be realised in an improved setup. Finally, we provide a detailed analysis of the screening mechanism and additional symmetries of the dilaton field theory.

arXiv comment8 pages, 5 figures

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• Dynamical Casimir effect with screened scalar fields
• Quantum and thermal pressures from light scalar fields
• Equivalence of scalar-tensor theories and scale-dependent gravity
• Structural Implications of the Chameleon Mechanism on White Dwarfs