Singularity-free cosmological models
Abstract
Singularity-free cosmological models are a recent advance in the field of exact solutions. Previously thought not to exist, these models are globally hyperbolic and obey the strong energy condition everywhere. We describe and summarize the history of these models and their general physical features. The methods by which the singularity-free models evade the general and powerful singularity theorems are discussed. Finally realistic generalisations of singularity-free models are proposed and examined. Such singularity-free but FLRW-like models may yield a classical way in which to evade the Big Bang singularity of the standard cosmological model.