Some perspectives on the RG approach to gravitational clustering.

by Dr Juan Beltran (ITP San Paulo (Brasil))

Wednesday 18 Feb 2009, 11:00 → 12:00 Europe/Zurich

1/1-025 (CERN)

We will review the renormalized cosmological perturbation theory formalism to study non-linear evolution of structure formation in the Universe. Aside of providing an efficient diagrammatic method to solve the equations governing gravitational clustering, it was recently shown that, regarding baryon acoustic oscillations features, the calculation of the dark matter density power spectrum is in excellent agreement with the results from N-body numerical simulations. Here, we will discuss an alternative formulation of the method in terms of renormalization group inspired techniques, and present some perspectives regarding future applications to non-gaussian effects on the dark matter power spectrum.