Coupled oscillators as models of phantom and scalar field cosmologies
General Relativity and Quantum Cosmology
2009-11-10 v1
Abstract
We study a toy model for phantom cosmology recently introduced in the literature and consisting of two oscillators, one of which carries negative kinetic energy. The results are compared with the exact phase space picture obtained for similar dynamical systems describing, respectively, a massive canonical scalar field conformally coupled to the spacetime curvature, and a conformally coupled massive phantom. Finally, the dynamical system describing exactly a minimally coupled phantom is studied and compared with the toy model.
Keywords
Cite
@article{arxiv.gr-qc/0404078,
title = {Coupled oscillators as models of phantom and scalar field cosmologies},
author = {Valerio Faraoni},
journal= {arXiv preprint arXiv:gr-qc/0404078},
year = {2009}
}
Comments
18 pages, LaTeX, to appear in Physical Review D