Onset of Nonlinearity in Cosmology

On the largest observable scales, 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 behavior of the distribution of matter is studied by numerical simulation. In the intermediate region, 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 (anomalous non-Gaussian distributions, higher order correlations), and analytic methods (mode coupling, phenomenological approximations). Such considerations may also be of interest in other similar settings, such as the onset of turbulence.Fry, James N. is the author of 'Onset of Nonlinearity in Cosmology' with ISBN 9781573313247 and ISBN 1573313246.