Inflationary Theory and Alternative Cosmology
High Energy Physics - Theory
2009-11-07 v2 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Popular Physics
Abstract
Recently Hollands and Wald argued that inflation does not solve any of the major cosmological problems. We explain why we disagree with their arguments. They also proposed a new speculative mechanism of generation of density perturbations. We show that in their scenario the inhomogeneities responsible for the large scale structure observed today were generated at an epoch when the energy density of the hot universe was 10^{95} times greater than the Planck density. The only way to avoid this problem is to assume that there was a stage of inflation in the early universe.
Cite
@article{arxiv.hep-th/0206088,
title = {Inflationary Theory and Alternative Cosmology},
author = {Lev Kofman and Andrei Linde and V. Mukhanov},
journal= {arXiv preprint arXiv:hep-th/0206088},
year = {2009}
}
Comments
17 pages, 1 fig, a discussion of a canonical measure of probability of inflation is added