Big-Rip, Sudden Future, and other exotic singularities in the universe

TL;DR

This paper reviews various exotic singularities in the universe's evolution, exploring their characteristics, relation to cosmological parameters, and effects on objects approaching these singularities.

Contribution

It provides a comprehensive analysis of different exotic singularities, their relation to higher-order expansion parameters, and their implications for objects in the universe.

Findings

Identification of multiple exotic singularities in cosmology.

Relation of singularities to jerk and snap parameters.

Behavior of objects near singularities analyzed.

Abstract

We discuss exotic singularities in the evolution of the universe motivated by the progress of observations in cosmology. Among them there are: Big-Rip (BR), Sudden Future Singularities (SFS), Generalized Sudden Future Singularities (GSFS), Finite Density Singularities (FD), type III, and type IV singularities. We relate some of these singularities with higher-order characteristics of expansion such as jerk and snap. We also discuss the behaviour of pointlike objects and classical strings on the approach to these singularities.