Secondorder evolution of cold dark matter perturbations
Abstract
Secondorder perturbation theory is used to study the nonlinear gravitational evolution of the mass distribution on scales of several tens of Mpc in the standard CDM cosmogony. The results show that nonlinear evolution can move the first zerocrossing of the matter correlation function outwards if a high normalization is used, but that the change is very small with a more standard 'biased' CDM normalization. If rich clusters occur at the peaks of the primordial perturbation field, then these nonlinear dynamical effects are still negligible compared to the statistical clustering and the increase in zerocrossing scale of Xi(CDM) cannot be expected to alleviate the largescale structure problem for CDM to any appreciable extent.
 Publication:

Monthly Notices of the Royal Astronomical Society
 Pub Date:
 March 1990
 DOI:
 10.1093/mnras/243.2.171
 Bibcode:
 1990MNRAS.243..171C
 Keywords:

 Dark Matter;
 Evolution (Development);
 Gravitational Effects;
 Mass Distribution;
 Perturbation Theory;
 Correlation;
 Many Body Problem;
 Power Spectra;
 Red Shift;
 Astrophysics