Scalar Field Oscillations Contributing to Dark Energy
Astrophysics
2016-08-30 v2 High Energy Physics - Phenomenology
Abstract
We use action-angle variables to describe the basic physics of coherent scalar field oscillations in the expanding universe. These analytical mechanics methods have some advantages, like the identification of adiabatic invariants. As an application, we show some instances of potentials leading to equations of state with , thus contributing to the dark energy that causes the observed acceleration of the universe.
Keywords
Cite
@article{arxiv.astro-ph/0501381,
title = {Scalar Field Oscillations Contributing to Dark Energy},
author = {Eduard Masso and Francesc Rota and Gabriel Zsembinszki},
journal= {arXiv preprint arXiv:astro-ph/0501381},
year = {2016}
}
Comments
17 pages, 6 figures, Latex file. Sec.II reduced, discussion on sound speed added in Sec.IV, new references added. Accepted for publication in Physical Review D