Universality classes for models of inflation
  We show that the cosmological evolution of a scalar field in a potential can be obtained from a renormalisation group equation. The slow roll regime of inflation models is understood in this context as the slow evolution close to a fixed point, described by the methods of renormalisation group. This explains in part the universality observed in the predictions of a certain number of inflation models. We illustrate this behavior on a certain number of examples and discuss it in the context of the AdS/CFT correspondence. 
P. Binetruy, E. Kiritsis, J. Mabillard, M. Pieroni, C. Rosset
astro-ph.CO gr-qc hep-ph hep-th