Nonlinear Evolution of Disturbances in a (1+1)-Dimensional Universe
arXiv:1001.3709
Abstract
General exact solution is obtained for the problem of the development of arbitrary disturbances of the density and velocity in a (1+1)-dimensional universe. This analytical solution may serve, particularly, as a test for numerical methods. For an illustration, the nonlinear distortion of a sinusoidal perturbation of the initial density is calculated.
3 pages