Towards conformal cosmology
High Energy Physics - Theory
2016-02-17 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
Approximate de Sitter symmetry of inflating Universe is responsible for the approximate flatness of the power spectrum of scalar perturbations. However, this is not the only option. Another symmetry which can explain nearly scale-invariant power spectrum is conformal invariance. We give a short review of models based on conformal symmetry which lead to the scale-invariant spectrum of the scalar perturbations. We discuss also potentially observable features of these models.
Cite
@article{arxiv.1508.07728,
title = {Towards conformal cosmology},
author = {M. Libanov and V. Rubakov and G. Rubtsov},
journal= {arXiv preprint arXiv:1508.07728},
year = {2016}
}
Comments
Mini-review, prepared for JETP Letters; 11 pages, 3 figures