A note on the structural stability of tachyonic inflation
General Relativity and Quantum Cosmology
2009-11-10 v2
Abstract
We study the structural stability of tachyonic inflation against changes in the shape of the potential. Following Lidsey (Gen. Rel. Grav. 25 (1993) 399), the concepts of rigidity and fragility are defined through a condition on the functional form of the Hubble factor. We find that the models are rigid in the sense that the attractor solutions never change as long as the conditions for inflation are met.
Keywords
Cite
@article{arxiv.gr-qc/0402060,
title = {A note on the structural stability of tachyonic inflation},
author = {J. M. Aguirregabiria and Ruth Lazkoz},
journal= {arXiv preprint arXiv:gr-qc/0402060},
year = {2009}
}
Comments
5 pages, typos corrected and references added, matches version to appear in MPLA