The Onset of Nonlinearity in Cosmology

The universe appears to be nearly homogeneous and isotropic with small fluctuations that are easily and accurately treated in linear perturbation theory.

On small scales local variations are large and the behaviour of the distribution of matter is studied by numerical simulation.

In the intermediate region neither suffices completely.

Nonlinearity in the evolution can no longer be ignored but finite volume and resolution effects make simulation difficult as well.

This volume focuses on the intermediate scales; the onset of nonlinearity; statistical techniques for identifying its effects; and analytic methods for studying.