The influence of scalar fields in protogalactic interactions

TL;DR

This paper uses modified SPH simulations within scalar-tensor theories to study how massive scalar fields affect protogalactic collisions, revealing that tidal interactions can generate significant intrinsic angular momentum.

Contribution

It introduces a modified SPH simulation framework within scalar-tensor theories to analyze protogalactic interactions and angular momentum generation.

Findings

Scalar fields influence protogalactic collision dynamics.

Tidal interactions can produce substantial intrinsic angular momentum.

Simulations show scalar fields' role in galaxy formation processes.

Abstract

We present simulations within the framework of scalar-tensor theories, in the Newtonian limit, to investigate the influence of massive scalar fields on the dynamics of the collision of two equal spherical clouds. We employ a SPH code modified to include the scalar field to simulate two initially non-rotating protogalaxies that approach each other, and as a result of the tidal interaction, intrinsic angular momentum is generated. We have obtained sufficient large values of J/M to suggest that intrinsic angular momentum can be the result of tidal interactions.