Non-integrability of density perturbations in the FRW universe
General Relativity and Quantum Cosmology
2007-05-23 v3 Mathematical Physics
math.MP
Abstract
We investigate the evolution equation of linear density perturbations in the Friedmann-Robertson-Walker universe with matter, radiation and the cosmological constant. The concept of solvability by quadratures is defined and used to prove that there are no "closed form" solutions except for the known Chernin, Heath, Meszaros and simple degenerate ones. The analysis is performed applying Kovacic's algorithm. The possibility of the existence of other, more general solutions involving special functions is also investigated.
Keywords
Cite
@article{arxiv.gr-qc/0508119,
title = {Non-integrability of density perturbations in the FRW universe},
author = {Tomasz Stachowiak and Marek Szydlowski and Andrzej J. Maciejewski},
journal= {arXiv preprint arXiv:gr-qc/0508119},
year = {2007}
}
Comments
13 pages. The latest version with added references, and a relevant new paragraph in section II