Constraints on non-standard cosmological models from Planck data

TL;DR

This paper reviews how Planck data constrains non-standard cosmological models like kination, brane world, and shear dominated universes by analyzing dark matter relic density and related parameters.

Contribution

It provides the first comprehensive constraints on non-standard cosmologies using Planck data, focusing on dark matter parameters and model-specific variables.

Findings

Constraints on dark matter cross sections

Limits on five-dimensional Planck mass in brane cosmology

Bounds on shear temperature in shear dominated universe

Abstract

We review the relic density of dark matter in the non-standard cosmological scenarios which includes kination models, brane world cosmology and shear dominated universe. Then we use the Planck data to find constraints on the parameter spaces as dark matter cross sections and the five dimentional Planck mass for brane cosmology, enhancement factor for kination model and the inverse-scaled shear temperature for shear dominated universe.