A symmetry of the spatially flat Friedmann equations with barotropic fluid
General Relativity and Quantum Cosmology
2015-05-30 v1 Cosmology and Nongalactic Astrophysics
Abstract
A string-inspired duality symmetry of the spatially flat Friedmann equations of general-relativistic cosmology is discussed and generalized, providing a map between exact solutions corresponding to different values of the barotropic index.
Keywords
Cite
@article{arxiv.1108.2102,
title = {A symmetry of the spatially flat Friedmann equations with barotropic fluid},
author = {Valerio Faraoni},
journal= {arXiv preprint arXiv:1108.2102},
year = {2015}
}
Comments
10 pages, no figures, to appear in Phys. Lett. B