Scalar-tensor cosmological simulations

Details Scalar-tensor cosmological simulations Scalar-tensor cosmological simulations

2008-02-08

arxiv.org/abs/0802.1170v1

AIP Conf.Proc.977:302-309,2008

Astronomy and Astrophysics

Astrophysics

6 pages, 6 figures. Recent Developments in Gravitation and Experimental Physics: 3rd Mexican Meeting of Mathematical and Exper

Scientific paper

10.1063/1.2902793

We present $N$-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 $\Lambda$CDM models and compute the density and velocity profiles of the most massive groups found at z=0.

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