Low redshift constraints on scalar-tensor theories
St\'ephane Fay
TL;DR
This paper uses lunar laser ranging and supernovae data to constrain scalar-tensor theories at low redshift, providing bounds on the scalar field independent of its potential form, and shows these theories align with LCDM within 1 sigma.
Contribution
It offers new low-redshift constraints on scalar-tensor theories that are independent of the scalar potential, enhancing understanding of alternative gravity models.
Findings
Scalar-tensor theories are consistent with LCDM at 1 sigma.
Constraints are derived independently of the scalar potential form.
Results apply to well-known scalar-tensor models.
Abstract
Scalar-tensor theories are constrained with lunar laser ranging and supernovae data at low redshift. This allows to find some constraints on the scalar field independently on the form of its potential once the gravitation function is specified. We apply these results to some well known scalar-tensor theories showing that they agreed with the LCDM model at 1 sigma.
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