WMAP5 constraints on the unified model of dark energy and dark matter

TL;DR

This paper uses WMAP5 data to constrain the Generalized Chaplygin Gas model, which unifies dark energy and dark matter, by analyzing the CMBR power spectrum features.

Contribution

It provides new observational constraints on the GCG model parameters using the latest WMAP five-year data.

Findings

Constraints on GCG parameters derived from CMB data

Limits on GCG model viability based on peak positions

Refinement of dark energy and dark matter unification models

Abstract

We derive constraints on the parameter space of the unified model of dark energy and dark matter, the Generalized Chaplygin Gas (GCG), from the amplitudes and positions of the first few peaks and first trough of the cosmic microwave background radiation (CMBR) power spectrum, using the latest WMAP five year data.