Non-linearity of large-scale structure formation in the Universe
| dc.creator | Chiang, Lung-Yih | |
| dc.date | 2005-08-17 | |
| dc.date.accessioned | 2026-07-07T02:18:28Z | |
| dc.date.available | 2026-07-07T02:18:28Z | |
| dc.description | In the standard picture of cosmological structure formation, the Universe we see today is evolved under the gravitational instability from tiny random fluctuations. In this talk I discuss the onset of non-linearity in the large scale structure formation of the Universe when the linear perturbation theory break downs. Using 1D Zel'dovich Approximation which provides an exact solution for density evolution, I illustrate two effects: mode spawning and mode merging and their connection to mode coupling. Those mode couplings (quadratic, cubic >...etc.) from gravitational clustering are in fact what the polyspectra (bispectrum, trispectrum...etc.) are meant to measure. | |
| dc.description | talk in "Nonlinear Cosmology" workshop at ICTP, Trieste, May 2005. To appear in the special volume "Nonlinear Cosmology" of International J. of Modern Physics D | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0508375 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0508375 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/9500 | |
| dc.subject | Astrophysics | |
| dc.title | Non-linearity of large-scale structure formation in the Universe | |
| dc.type | text |