The environment dependent dilaton in the laboratory and the solar system

Area of Science:

• * Theoretical Physics
• * Cosmology
• * Astrophysics

Background:

• * The cosmological dilaton is a hypothetical particle that influences the universe's expansion.
• * Deviations from General Relativity are often suppressed in dense environments via the Damour-Polyakov screening mechanism.
• * Understanding the dilaton's behavior is key to reconciling gravity theories with cosmological observations.

Purpose of the Study:

• * To derive analytical solutions for the environment-dependent dilaton field.
• * To explore the implications of these solutions for laboratory experiments and astronomical observations.
• * To investigate dilaton models compatible with cosmic acceleration and the swampland conjectures.

Main Methods:

• * Derivation of approximate analytical solutions to field theory equations of motion.
• * Analysis of dilaton behavior in various environments (laboratory, solar system, dense matter).
• * Examination of dilaton models within the context of the Damour-Polyakov screening mechanism.

Main Results:

• * Solutions applicable to experiments like qBOUNCE, neutron interferometry, and the Cannex experiment.
• * Demonstrated that future experiments can probe specific parameter spaces of the dilaton.
• * Showed that current constraints favor a regime consistent with the swampland distance and de Sitter conjectures.

Conclusions:

• * The study provides a theoretical framework for testing environment-dependent dilatons in diverse experimental settings.
• * Findings support the compatibility of certain dilaton models with cosmic acceleration and fundamental physics conjectures.
• * Future experiments hold the potential to significantly refine our understanding of gravity and cosmology.