Perturbations to the Cosmological Expansion in a Grainy Universe
| dc.creator | Bochner, Brett | |
| dc.date | 2007-02-27 | |
| dc.date.accessioned | 2026-07-07T07:48:58Z | |
| dc.date.available | 2026-07-07T07:48:58Z | |
| dc.description | The matter content of the Universe is generally regarded as a perfect fluid on sufficiently large scales, for all epochs. But the recent cosmological matter distribution, consisting of an (ideally) random distribution of gravitationally collapsed structures, is more accurately described as a collection of discrete grains, than as a fluid. It is well known that granular materials may have very different macroscopic properties than fluids; analogously, we investigate the possibility that pervasive small-scale inhomogeneities in the recent Universe may lead to perturbations of the cosmological expansion on intermediate and/or large scales. | |
| dc.description | Poster presented at the 21st Texas Symposum on Relativistic Astrophysics, Florence, Italy, December 9-13, 2002. 16 pages, no figures. Qualitative discussion of several fundamental questions and problems in cosmology; to be superceded in the future by a detailed, quantitative model | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0702703 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0702703 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/124687 | |
| dc.subject | Astrophysics | |
| dc.title | Perturbations to the Cosmological Expansion in a Grainy Universe | |
| dc.type | text |