Uncosmology

Abstract

We discuss some cosmological features of a hypothetical type of new physics characterized by begin asymptotically free in the UV regime and conformally invariant in the IR. We show that nucleosynthesis data generates non-trivial constrains this type of models.

Comments: Presented at the XXXIII International Conference of Theoretical Physics "Matter to the Deepest: Recent Developments in Physics of Fundamental Interactions", Ustron'09 Ustron, Poland, September 11-16, 2009. 5 pages 4 figures; requires revtex