Unification of Dark Matter and Dark Energy: the Inhomogeneous Chaplygin Gas

Abstract

We extend the world model of Kamenshchik et al. to large perturbations by formulating a Zeldovich-like approximation. We sketch how this model unifies dark matter with dark energy in a geometric setting reminiscent of M-theory.

Figures (1)

• Figure 1: Evolution of $b (a)/ b(a_{\rm eq})$ from $a_{\rm eq}= 1.0 \times 10^{-4}$ for $\Omega_{\Lambda} = 0.7$ and $b' (a_{\rm eq}) = 0$, for the Chaplygin gas (solid line) and $\Lambda$CDM (dashed line).