Kinetic Field Theory – A new approach to non-linear structure formation

I will give an overview of a novel analytic approach to cosmic large-scale structure formation which provides a density fluctuation power spectrum that agrees well with state of the art N-body simulations up to k = 10h Mpc−1 . Thus far, the non-linear regime of structure formation is only accessible through expensive numerical N-body simulations since the conventional analytic treat- ment of cosmic density fluctuations via the hydrodynamical equations runs into severe problems even in a mildly non-linear regime. I will point out how our Kinetic Field Theory avoids the difficulties of standard perturbation theory by construction and allows to proceed deeply into the non-linear regime of density fluctuations. My main focus will be on the opportunities this method provides to study the physics behind structure formation.