Multifluid Models for Cyclic Cosmology

Understand

Inspired by the Landau two-fluid model of superfluidity, we consider a similar multifluid description for cosmology where two normal fluids occur for matter and radiation respectively.

• For cyclic cosmology, two dark energy superfluid components turn out to be insufficient but three superfluids can lead to a sensible five-fluid model which in a certain limit becomes indistinguishable from the brane-world cyclic model proposed earlier (Baum and Frampton).
• Distinguishing more general five-fluid models from brane-world models for cyclic cosmology could be feasible with more accurate observational data.