Doing numerical cosmology with the Cactus code

TL;DR

This paper introduces a new module for the Cactus code tailored for numerical cosmology simulations, demonstrating its stability, convergence, and applicability for evolving various cosmological models based on the FRW metric.

Contribution

It presents the development of a dedicated cosmology thorn for the Cactus code, enabling detailed numerical simulations of cosmological models.

Findings

The code demonstrates stable and convergent numerical evolutions.

It successfully simulates different cosmological scenarios.

Numerical results validate the code's applicability for cosmological research.

Abstract

The article presents some aspects concerning the construction of a new thorn for the Cactus code, a complete 3-dimensional machinery for numerical relativity. This thorn is completely dedicated to numerical simulations in cosmology, that means it can provide evolutions of different cosmological models, mainly based on Friedman-Robertson-Walker metric. Some numerical results are presented, testing the convergence, stability and the applicability of the code.