On the self-interaction of dark energy in a ghost-condensate model
General Relativity and Quantum Cosmology
2013-01-22 v1 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
In a ghost-condensate model of dark energy the combined dynamics of the scalar field and gravitation is shown to impose non-trivial restriction on the self-interaction of the scalar field. Using this restriction we show that the choice of a zero self-interaction leads to a situation too restrictive for the general evolution of the universe. This restriction, obtained in the form of a quadratic equation of the scalar potential, is demonstrated to admit real solutions. Also, in the appropriate limit it reproduces the potential in the phantom cosmology.
Cite
@article{arxiv.1301.4746,
title = {On the self-interaction of dark energy in a ghost-condensate model},
author = {Gour Bhattacharya and Pradip Mukherjee and Anirban Saha},
journal= {arXiv preprint arXiv:1301.4746},
year = {2013}
}
Comments
4 pages, Latex