Dynamics of dark energy models and centre manifolds

Autor:	Boehmer, Christian G., Chan, Nyein, Lazkoz, Ruth
Rok vydání:	2011
Předmět:	General Relativity and Quantum Cosmology Astrophysics - Cosmology and Extragalactic Astrophysics
Zdroj:	Phys.Lett. B714 (2012) 11-17
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physletb.2012.06.064
Popis:	We analyse dark energy models where self-interacting three-forms or phantom fields drive the accelerated expansion of the Universe. The dynamics of such models is often studied by rewriting the cosmological field equations in the form of a system of autonomous differential equations, or simply a dynamical system. Properties of these systems are usually studied via linear stability theory. In situations where this method fails, for instance due to the presence of zero eigenvalues in the Jacobian, centre manifold theory can be applied. We present a concise introduction and show explicitly how to use this theory in two concrete examples. Comment: 11 pages, 1 figure
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1111.6247 Zobrazit plný text záznamu View this record from Arxiv