A modified Friedmann equation

Abstract

We recently formulated a model of the universe based on an underlying W3-symmetry. It allows the creation of the universe from nothing and the creation of baby universes and wormholes for spacetimes of dimension 2, 3, 4, 6 and 10. Here we show that the classical large time and large space limit of these universes is one of exponential fast expansion without the need of a cosmological constant. Under a number of simplifying assumptions, our model predicts that w = −1.2 in the case of four-dimensional spacetime. The possibility of obtaining a w-value less than −1 is linked to the ability of our model to create baby universes and wormholes.