On non-singular inhomogeneous cosmological models

TL;DR

This paper reviews recent findings on non-singular inhomogeneous cosmological models, highlighting that such models are more prevalent than previously thought, especially among stiff perfect fluid spacetimes, and explores their generalization to other matter sources.

Contribution

It extends recent results on non-singular inhomogeneous cosmologies to include various matter sources beyond stiff perfect fluids.

Findings

Non-singular inhomogeneous models are more common than previously believed.

Generalization of non-singular models to other matter sources.

Potential implications for cosmological singularity understanding.

Abstract

In this talk we would like to review recent results on non-singular cosmological models. It has been recently shown that among stiff perfect fluid inhomogeneous spacetimes the absence of singularities is more common than it was expected in the literature. We would like to generalize these results and apply them to other matter sources.