Non-linear stability of $\alpha'$-corrected Friedmann equations
High Energy Physics - Theory
2023-04-05 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
We study the non-linear stability of fixed-point solutions to the -exact equations from O invariant cosmology, with and without matter perturbations. Previous non-linear analysis in the literature is revisited, and its compatibility with known linear perturbation results is shown. Some formal aspects of cosmological perturbations in duality invariant cosmology are discussed, and we show the existence of time-reparameterization invariant variables for perturbations.
Cite
@article{arxiv.2212.11392,
title = {Non-linear stability of $\alpha'$-corrected Friedmann equations},
author = {Heliudson Bernardo and Jan Chojnacki and Vincent Comeau},
journal= {arXiv preprint arXiv:2212.11392},
year = {2023}
}
Comments
15 pages