Cosmic String Wakes in Scalar-Tensor Gravities

TL;DR

This paper investigates how cosmic string wakes evolve within scalar-tensor gravity theories, comparing results with General Relativity, and explores potential cosmological observational implications of scalar field contributions.

Contribution

It introduces a model analyzing cosmic string wakes in scalar-tensor gravity and compares their evolution to those in General Relativity, highlighting potential observational effects.

Findings

Scalar field influences wake evolution significantly

Comparison shows differences from General Relativity results

Potential for new cosmological observations

Abstract

The formation and evolution of cosmic string wakes in the framework of a scalar-tensor gravity are investigated in this work. We consider a simple model in which cold dark matter flows past an ordinary string and we treat this motion in the Zel'dovich approximation. We make a comaprison between our results and previous results obtained in the context of General Relativity. We propose a mechanism in which the contribution of the scalar field to the evolution of the wakes may lead to a cosmological observation.