A possible analogy between the dynamics of a skydiver and a scalar field: cosmological consequences
Abstract
The cosmological consequences of a slow rolling scalar field with constant kinetic term in analogy to the vertical movement of a skydiver after reaching terminal velocity are investigated. It is shown that the terminal scalar field hypothesis is quite realistic. In this approach, the scalar field potential is given by a quadratic function of the field. This model provides solutions in which the Universe was dominated in the past by a mixture of baryons and dark matter, is currently accelerating (as indicated by type Ia supernovae data), but will be followed by a contraction phase. The theoretical predictions of this model are consistent with current observations, therefore, a terminal scalar field is a viable candidate to dark energy.
Keywords
Cite
@article{arxiv.1708.03406,
title = {A possible analogy between the dynamics of a skydiver and a scalar field: cosmological consequences},
author = {F. E. M. Costa},
journal= {arXiv preprint arXiv:1708.03406},
year = {2018}
}
Comments
Accepted for publication