The cosmological constant filter without big bang singularity
General Relativity and Quantum Cosmology
2011-10-27 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
In the recently proposed cosmological constant (CC) filter mechanism based on modified gravity in the Palatini formalism, gravity in the radiation, matter and late-time de Sitter eras is insensitive to energy sources with the equation of state -1. This implies that finite vacuum energy shifts from phase transitions are filtered out, too. In this work we investigate the CC filter model at very early times. We find that the initial big bang singularity is replaced by a cosmic bounce, where the matter energy density and the curvature are finite. In a certain case this finiteness can be observed already on the algebraic level.
Cite
@article{arxiv.1108.0875,
title = {The cosmological constant filter without big bang singularity},
author = {Florian Bauer},
journal= {arXiv preprint arXiv:1108.0875},
year = {2011}
}
Comments
11+3 pages, 6 figures, one reference added, accepted by Class. Quant. Grav