TL;DR
This paper introduces N-body cosmological simulations within scalar-tensor gravity frameworks, incorporating a modified Helmholtz equation for the scalar field, and analyzes the impact on density and velocity profiles in ΛCDM models.
Contribution
It presents a novel simulation approach combining scalar-tensor theories with standard cosmology, including a Yukawa potential for the scalar field.
Findings
Density profiles of massive groups are affected by scalar field contributions.
Velocity profiles show deviations from standard ΛCDM predictions.
Scalar-tensor effects could influence structure formation in the universe.
Abstract
We present -body cosmlogical simulations in the framework of the Newtonian limit of scalar-tensor theories of gravity. The scalar field is described by a modified Helmholtz equation with a source that is coupled to the standard Poisson equation of Newtonian gravity. The effective gravitational force is given by two contributions: the standard Newtonian potential plus a Yukawa potential stemming from massive scalar fields. In particular, we consider simulations of CDM models and compute the density and velocity profiles of the most massive groups found at z=0.
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